Getting your Trinity Audio player ready...
|
Explore the best trails from Boulder’s Chautauqua Trailhead. Our guide covers everything from the scenic Chautauqua Trail to the challenging First and Second Flatirons, offering stunning views and diverse landscapes.
Introduction
Nestled at the base of the iconic Flatirons, the Chautauqua Trailhead in Boulder, Colorado, serves as the gateway to some of the most picturesque and rewarding hiking experiences in the state. This Chautauqua Trailhead hiking guide will introduce you to the stunning trails that showcase Boulder’s natural beauty, making it a must-visit destination for outdoor enthusiasts. The Flatirons, a series of five majestic, slanted sandstone formations, are a symbol of Boulder’s landscape, attracting hikers, climbers, and nature lovers alike.
Chautauqua Park, established in the late 19th century as part of the national Chautauqua movement, continues to be a hub for cultural and outdoor activities. It offers a variety of trails that cater to all skill levels, from the challenging ascent to the First Flatiron summit to the more leisurely Mesa Trail, each providing breathtaking views of Boulder and the surrounding mountains.
This Chautauqua Trailhead hiking guide is designed for anyone eager to explore Boulder’s natural wonders. Whether you’re a seasoned hiker or a casual walker, the trails here offer a chance to connect with nature and experience the grandeur of the Colorado landscape. The Chautauqua Trailhead is more than just an entry point to Boulder’s outdoors; it’s a place where history, culture, and adventure converge, offering unforgettable experiences for all who visit.
Read our complete Boulder travel and adventure guide here.
How to Get to the Chautauqua Trailhead
The Chautauqua Trailhead is conveniently located just minutes from downtown Boulder, making it easily accessible for both locals and visitors. To reach the trailhead, you’ll start by heading toward Boulder via US Highway 36, also known as the Denver-Boulder Turnpike. If you’re coming from Denver, this drive typically takes about 30 to 45 minutes, depending on traffic.
Once you reach Boulder, continue on US-36 W and follow the signs for Baseline Road. Exit onto Baseline Road and head west. As you drive, you’ll notice the Flatirons growing larger and more imposing as you approach the foothills. Continue on Baseline Road for approximately two miles until you reach the entrance to Chautauqua Park, located at the intersection of Baseline Road and 9th Street. The park’s entrance is clearly marked, and you’ll likely see other vehicles and pedestrians heading in the same direction.
Parking can be challenging, especially during weekends and holidays when the park is bustling with visitors. The main parking lot is located just inside the park entrance, but spaces fill up quickly. If the lot is full, there are several alternative parking options nearby. You can find additional parking along Baseline Road, 9th Street, and the surrounding residential streets. Be sure to observe any parking restrictions and respect the local residents’ driveways and property.
For those who prefer not to drive, Boulder’s public transportation system offers several convenient options. The Hop bus service provides regular routes between downtown Boulder and the Chautauqua area, making it an easy and eco-friendly way to reach the trailhead. Additionally, the park is accessible by bike, with well-maintained bike lanes leading directly to the entrance.
Once you’ve parked or arrived by bus or bike, the trailhead is just a short walk from the parking area. You’ll find yourself immediately immersed in the natural beauty of the park, with the Flatirons towering above and the promise of adventure just ahead.
Geography and Geology of the Trail Region
The Chautauqua Trailhead offers access to a landscape that is as geologically fascinating as it is visually stunning. The Flatirons themselves, which dominate the skyline, are a striking example of the region’s dynamic geological history. These steep, angular rock formations are composed primarily of sandstone, dating back to the Fountain Formation, which formed around 290 to 296 million years ago during the Pennsylvanian period.
The Fountain Formation is the result of ancient sediment deposits from the erosion of the Ancestral Rocky Mountains. Over millions of years, these sediments were compressed into the hard sandstone layers that we see today. The distinctive red color of the Flatirons is due to the high iron content in the sandstone, which oxidized over time, giving the rocks their characteristic hue.
The Flatirons’ dramatic tilt is a product of tectonic forces that shaped the region. During the Laramide Orogeny, a mountain-building event that occurred between 70 and 40 million years ago, the area was subjected to intense compressional forces. These forces caused the sandstone layers to uplift and tilt, creating the angled formations that now rise sharply from the landscape. The same tectonic activity also led to the uplift of the modern Rocky Mountains, further contributing to the rugged topography of the area.
As you hike through the trails at Chautauqua, you’ll notice other geological features that tell the story of this ancient landscape. The area is characterized by a mixture of sedimentary rocks, including sandstone, shale, and conglomerates, which were deposited in different environments ranging from ancient river systems to shallow seas. These rock layers have been exposed and eroded over millions of years, creating the varied terrain that makes hiking in this region so interesting.
In addition to the Flatirons, the landscape around Chautauqua includes rolling foothills, steep cliffs, and deep valleys. The elevation at the trailhead is approximately 5,700 feet, and the terrain rises quickly as you ascend the trails, with the highest points reaching over 7,000 feet. This elevation gain provides not only a physical challenge for hikers but also spectacular panoramic views of Boulder, the plains, and the distant peaks of the Rockies.
Water plays a crucial role in shaping the geography of the region as well. Seasonal streams, which are often dry in the summer, carve through the landscape, creating gullies and ravines. During periods of heavy rainfall or snowmelt, these streams can become swift-moving creeks, further eroding the softer rock layers and contributing to the dynamic nature of the terrain.
The Chautauqua area is also part of the larger Front Range, a transition zone between the Great Plains and the Rocky Mountains. This region is geologically active, with ongoing erosion, sediment deposition, and occasional minor seismic activity continuing to shape the landscape. For geology enthusiasts, a hike through Chautauqua offers a unique opportunity to observe the forces of nature at work and to appreciate the immense timescales over which the earth’s surface is transformed.
Ecology in the Trail Area
The trails at Chautauqua are not only a showcase of geological wonders but also a rich tapestry of ecological diversity. The area’s unique position at the intersection of the Great Plains and the Rocky Mountains creates a convergence zone where different ecosystems meet, resulting in a remarkable variety of plant and animal life.
As you begin your hike from the Chautauqua Trailhead, you’ll pass through open meadows that are characteristic of the lower elevations of the park. These meadows are home to an array of grasses and wildflowers, particularly vibrant in the spring and early summer. Common grasses include blue grama, needle-and-thread, and western wheatgrass, which are adapted to the dry, windy conditions of the Front Range. Among these grasses, you’ll find colorful wildflowers like prairie coneflower, lupine, and gaillardia, which attract a variety of pollinators, including bees, butterflies, and hummingbirds.
As you ascend the trails and enter the foothills, the vegetation shifts to shrubland and forested areas. Here, you’ll encounter dense stands of Gambel oak, mountain mahogany, and chokecherry, which provide important habitat and food sources for local wildlife. The Gambel oak, with its thick, leathery leaves, is particularly well-adapted to the dry conditions of the region and plays a crucial role in stabilizing the soil on the steep slopes.
The forests at Chautauqua are dominated by ponderosa pine, a species that thrives in the well-drained, rocky soils of the foothills. These tall, stately trees, with their reddish-brown bark and long needles, create a shady canopy that provides relief from the sun during the warmer months. Ponderosa pines are also highly resilient, with thick bark that helps protect them from wildfires, which are a natural part of the ecosystem in this region.
Interspersed among the ponderosa pines, you may also find Douglas firs and, at higher elevations, stands of aspen. Aspens are particularly striking in the fall when their leaves turn a brilliant gold, creating a stunning contrast against the dark green of the conifers. These trees are clonal, meaning they often grow in large groups connected by a shared root system, making them some of the oldest living organisms in the area.
Wildlife is abundant in the Chautauqua area, and hikers may be fortunate enough to encounter a variety of species during their trek. Mule deer are a common sight, often seen grazing in the meadows or browsing on shrubs along the trails. These graceful animals are well-adapted to the rugged terrain and are a quintessential part of the Colorado landscape.
Birdwatchers will also find plenty to enjoy at Chautauqua. The park is home to a diverse array of bird species, from the ubiquitous American robin and mountain bluebird to the more elusive and majestic red-tailed hawk and golden eagle. In the early morning and late afternoon, you may hear the distinctive calls of the western meadowlark or catch a glimpse of a broad-tailed hummingbird darting among the flowers.
The area’s rocky outcrops and cliffs provide excellent habitat for reptiles, including the western rattlesnake and the harmless bullsnake. These reptiles are typically shy and will often retreat when encountered, but it’s always wise to be cautious and aware of your surroundings, especially in the warmer months when they are most active.
In the spring and early summer, the creeks and streams that flow through the Chautauqua area support populations of amphibians, such as the boreal chorus frog and the tiger salamander. These water sources are also vital for the park’s smaller mammals, including squirrels, chipmunks, and the occasional porcupine.
The ecology of the Chautauqua area is not only diverse but also highly resilient. The plants and animals that call this region home have adapted to the often harsh conditions of the Front Range, where extremes of temperature, precipitation, and elevation create a challenging environment. As you hike through the park, take a moment to appreciate the delicate balance of life that thrives in this dynamic landscape.
Trail Descriptions
The Chautauqua Trailhead serves as the starting point for several of Boulder’s most beloved hiking trails, each offering a unique experience and perspective on the surrounding landscape. Whether you’re looking for a challenging climb, a scenic loop, or a leisurely walk, there’s a trail here to suit your needs.
Chautauqua Trail
Trail Stats:
- Distance: 1.2 miles (round trip)
- Elevation Gain: 400 feet
- Difficulty: Easy to Moderate
- Estimated Time: 45 minutes to 1 hour
The Chautauqua Trail is the perfect introduction to the Chautauqua Park area and the Flatirons. This trail is popular among both locals and visitors, thanks to its accessibility and breathtaking views. Starting at the Chautauqua Trailhead, the trail quickly ascends through lush meadows, offering expansive views of the city of Boulder and the majestic Flatirons in the background. As you hike, the towering sandstone formations seem to rise directly out of the earth, providing a dramatic backdrop to your journey.
The trail is relatively short but gains about 400 feet in elevation, making it a moderate climb that can be enjoyed by hikers of all skill levels. The path is well-maintained, with a mixture of dirt and rocky terrain, and is suitable for families and those looking for a quick hike with a big payoff. In spring and early summer, the meadows along the trail are often dotted with wildflowers, adding splashes of color to the already stunning landscape.
As you reach the top of the trail, you’ll find yourself at a natural overlook with panoramic views of Boulder, the plains, and the surrounding foothills. It’s an ideal spot to take a break, enjoy a snack, and soak in the scenery before heading back down. The Chautauqua Trail also connects to several other trails, such as the Flatirons Loop and the Bluebell Road, allowing you to extend your hike if you wish to explore further.
Given its popularity, the Chautauqua Trail can be busy, especially on weekends and holidays. If you’re looking for a quieter experience, consider hiking early in the morning or during the off-season. Regardless of when you visit, this trail is a must-do for anyone seeking to experience the beauty and grandeur of Boulder’s Flatirons.
Flatirons Loop Trail
Trail Stats:
- Distance: 2.7 miles (loop)
- Elevation Gain: 700 feet
- Difficulty: Moderate
- Estimated Time: 1.5 to 2 hours
The Flatirons Loop Trail is a favorite among hikers who want to experience the beauty of Boulder’s Flatirons from multiple perspectives. This moderate 2.7-mile loop takes you on a journey through a variety of landscapes, from open meadows to dense forests and rocky outcrops, all while providing stunning views of the iconic Flatirons.
The trail begins at the Chautauqua Trailhead and quickly branches off from the main Chautauqua Trail. As you start your hike, you’ll be greeted by sweeping views of the Flatirons and the city of Boulder. The trail gradually ascends, winding its way through grassy meadows where wildflowers bloom in the spring and summer. These meadows offer unobstructed views of the Flatirons, making them a perfect spot for photography and quiet contemplation.
As you continue along the trail, you’ll enter a shaded forested area dominated by ponderosa pines and Gambel oak. The scent of pine and the sound of rustling leaves create a serene atmosphere, offering a cool respite from the sun on warmer days. The trail becomes rockier as you ascend, and you’ll begin to encounter more elevation gain, making this part of the hike moderately challenging.
One of the highlights of the Flatirons Loop Trail is the opportunity to see the Flatirons from different angles as you navigate the loop. The changing perspectives and the play of light on the rock formations throughout the day make this trail particularly scenic. The loop also offers occasional glimpses of wildlife, such as mule deer or a soaring hawk, adding to the trail’s natural appeal.
The Flatirons Loop Trail can be completed in about 1.5 to 2 hours, depending on your pace and how often you stop to take in the views. It’s a great option for hikers who want a moderately challenging hike with a variety of terrains and spectacular scenery. Whether you’re a local or a visitor, this trail offers a quintessential Boulder hiking experience that showcases the best of the area’s natural beauty.
First and Second Flatiron Trail
Trail Stats:
- Distance: 2.9 miles (round trip)
- Elevation Gain: 1,400 feet
- Difficulty: Difficult
- Estimated Time: 2 to 3 hours
The First and Second Flatiron Trail is one of Boulder’s most iconic hikes, offering a challenging climb with a rewarding payoff at the summit. This 2.9-mile out-and-back trail is a must-do for experienced hikers looking to conquer the steep ascent to the base of the First and Second Flatirons, where they can enjoy close-up views of these towering sandstone formations.
The trail begins at the Chautauqua Trailhead and quickly diverges from the Chautauqua Trail, leading you into the forested slopes of the Flatirons. The initial section of the trail is relatively gentle, winding through a shaded area with tall ponderosa pines and rocky outcrops. However, the trail soon begins to climb steeply, with a series of switchbacks that lead you higher into the mountains. As you ascend, the trees thin out, and the views of Boulder and the plains below become increasingly dramatic.
The final approach to the Flatirons is the most challenging part of the hike. The trail becomes rockier and steeper, requiring careful footing as you navigate the rugged terrain. In some sections, you’ll need to scramble over large boulders, adding an element of adventure to the hike. As you near the base of the First Flatiron, the sheer size and scale of the rock formations become apparent, making the effort of the climb worthwhile.
At the summit, you’ll be rewarded with breathtaking views of Boulder, the plains, and the surrounding mountains. The panoramic vista from the top is one of the best in the area, offering a unique perspective on the Flatirons and the rugged landscape of the Front Range. This is a perfect spot to take a well-deserved break, enjoy a snack, and take in the views before beginning your descent.
The First and Second Flatiron Trail is a challenging hike that requires good physical fitness and hiking experience. The steep elevation gain and rocky terrain make it a strenuous climb, but for those who are up to the challenge, the experience is unforgettable. Whether you’re a local looking for a tough workout or a visitor eager to explore Boulder’s natural landmarks, this trail offers an exhilarating adventure with some of the best views in Colorado.
Royal Arch Trail
Trail Stats:
- Distance: 3.4 miles (round trip)
- Elevation Gain: 1,400 feet
- Difficulty: Difficult
- Estimated Time: 2.5 to 3.5 hours
The Royal Arch Trail is one of Boulder’s most popular and challenging hikes, known for its steep ascent and the stunning natural arch that awaits at the end. This 3.4-mile out-and-back trail offers a demanding climb, but the reward at the top—a spectacular sandstone arch with sweeping views of Boulder and the plains—makes it one of the most rewarding hikes in the area.
The trail begins at the Chautauqua Trailhead, following the Bluebell Road for a short distance before branching off into the forest. The initial section of the trail is relatively gentle, but it quickly becomes steeper as you begin the climb toward Royal Arch. The trail winds through a dense forest of ponderosa pines and Douglas firs, with occasional clearings that offer glimpses of the Flatirons and the surrounding foothills.
As you ascend, the trail becomes increasingly rugged, with large rocks and tree roots making the footing more challenging. Several sections of the trail are steep and require careful navigation, particularly after rain or snow when the path can be slippery. The elevation gain is significant, and you’ll likely feel the strain in your legs as you make your way up the mountain.
The final approach to Royal Arch is the most difficult part of the hike. The trail steepens considerably, with a series of rock steps and narrow passages that require both hands and feet to climb. However, as you round the final bend, the impressive Royal Arch comes into view, framed against the backdrop of the blue sky and the distant plains.
The Royal Arch itself is a natural sandstone formation that spans about 20 feet and stands nearly 30 feet tall. It’s a popular spot for photographers and hikers alike, offering a unique vantage point to take in the expansive views of Boulder and the surrounding landscape. On a clear day, you can see for miles, making the challenging climb well worth the effort.
After spending some time at the arch, you’ll retrace your steps back down the mountain. The descent can be just as challenging as the climb, so take your time and watch your footing on the rocky sections. The Royal Arch Trail is a demanding hike that requires good physical fitness and hiking experience, but it’s one of Boulder’s most rewarding outdoor adventures, offering a perfect blend of challenge, beauty, and natural wonder.
Enchanted Mesa and McClintock Nature Trails
Trail Stats:
- Distance: 2.3 miles (loop)
- Elevation Gain: 350 feet
- Difficulty: Easy to Moderate
- Estimated Time: 1 to 1.5 hours
The Enchanted Mesa and McClintock Nature Trails offer a peaceful and scenic hike through one of Boulder’s most tranquil natural areas. This 2.3-mile loop is perfect for families, casual hikers, and nature lovers looking to enjoy a relaxing walk in the woods with minimal elevation gain and plenty of opportunities to observe local wildlife.
The trail begins at the Chautauqua Trailhead, with the Enchanted Mesa Trail leading
you into a shaded forest of ponderosa pines and Gambel oaks. The path is well-maintained and relatively wide, making it accessible for hikers of all skill levels. As you walk, you’ll enjoy the cool shade provided by the towering trees, along with occasional views of the Flatirons peeking through the canopy.
The Enchanted Mesa Trail gradually climbs a small ridge, offering occasional views of the surrounding landscape. Along the way, you’ll pass several benches where you can sit and take in the peaceful surroundings. The trail is a favorite among birdwatchers, as the forest is home to a variety of bird species, including woodpeckers, jays, and chickadees.
After about a mile, the Enchanted Mesa Trail connects with the McClintock Nature Trail, which loops back toward the trailhead. The McClintock Trail follows a gentle downhill path alongside a small creek, adding to the serene atmosphere. Interpretive signs along the trail provide information about the local flora and fauna, making this hike both educational and enjoyable.
The McClintock Trail is particularly beautiful in the spring and early summer when the creek is flowing, and wildflowers bloom along the path. The sound of the babbling creek and the sight of colorful flowers make this section of the hike especially delightful. The trail eventually returns to the Chautauqua Trailhead, completing the loop.
The Enchanted Mesa and McClintock Nature Trails are ideal for those looking for a short, easy hike that showcases the natural beauty of the Boulder area without the strenuous climbs found on other trails. It’s a great option for a quick escape into nature or a leisurely afternoon walk, offering a peaceful retreat just minutes from downtown Boulder.
Mesa Trail
Trail Stats:
- Distance: 6.7 miles (one-way)
- Elevation Gain: 1,450 feet
- Difficulty: Moderate to Difficult
- Estimated Time: 3.5 to 4.5 hours (one-way)
The Mesa Trail is a classic Boulder hike that offers an immersive experience in the natural beauty of the Front Range. This 6.7-mile point-to-point trail runs from the Chautauqua Trailhead to the South Mesa Trailhead, passing through a diverse landscape that includes meadows, forests, and rocky outcrops. The Mesa Trail is perfect for hikers looking for a longer, more challenging hike that provides a comprehensive tour of the area’s varied terrain.
Starting at the Chautauqua Trailhead, the Mesa Trail begins with a gradual ascent through open meadows, where you’ll enjoy unobstructed views of the Flatirons and the city of Boulder. As you continue, the trail enters a forested area, with ponderosa pines and Douglas firs providing shade and a cool respite from the sun. The trail undulates with the natural contours of the land, offering a mix of moderate climbs and gentle descents.
One of the highlights of the Mesa Trail is the stunning views it offers along the way. As the trail follows the base of the Flatirons, you’ll have plenty of opportunities to stop and admire the rugged rock formations and the expansive vistas of the plains stretching out to the east. The trail also passes through several ecological zones, from dry grasslands to lush riparian areas, giving you a sense of the area’s rich biodiversity.
About halfway along the trail, you’ll reach the intersection with the Big Bluestem Trail, which offers an option to extend your hike or create a loop back to the Chautauqua Trailhead. Continuing on the Mesa Trail, you’ll pass through more forested areas and cross several small creeks, which are often dry in the summer but can be flowing during the spring melt.
The final section of the trail descends toward the South Mesa Trailhead, where the terrain becomes more rugged and rocky. The descent offers one last opportunity to take in the sweeping views before you reach the end of the trail. From here, you can either arrange for a car shuttle back to Chautauqua or hike back the way you came for a full day’s adventure.
The Mesa Trail is a challenging hike due to its length and elevation gain, but it’s also one of the most rewarding trails in the Boulder area. Whether you tackle it as a point-to-point hike or as an out-and-back, the Mesa Trail offers a true Colorado hiking experience, with diverse landscapes, stunning views, and a sense of adventure that will leave you with lasting memories.
Planning Your Hike
Proper planning is essential to ensure a safe and enjoyable hiking experience at Chautauqua. Here are some key considerations to keep in mind as you prepare for your adventure.
Timing
The best time to hike at Chautauqua is during the spring, summer, and fall months when the weather is mild, and the trails are generally free of snow and ice. Early morning and late afternoon are the best times of day to hike, as the temperatures are cooler and the lighting is ideal for photography. Keep in mind that the trails can be crowded, especially on weekends and holidays, so consider visiting on a weekday or during the off-season if you prefer a quieter experience.
Weather
Boulder’s weather can be unpredictable, particularly in the spring and fall when sudden storms can roll in. Always check the weather forecast before heading out, and be prepared for changing conditions. In the summer, thunderstorms are common in the afternoon, so it’s a good idea to start your hike early and aim to be off the trail by early afternoon. During the winter, the trails can be icy and snow-covered, making traction devices and trekking poles essential for safe hiking.
What to Bring
When hiking at Chautauqua, it’s important to be prepared with the right gear and supplies. Here are some essentials to bring:
- Water: The dry, high-altitude environment can be dehydrating, so be sure to carry plenty of water. A hydration pack or several water bottles are recommended.
- Snacks: Pack high-energy snacks like trail mix, energy bars, or fruit to keep your energy levels up during the hike.
- Clothing: Dress in layers to accommodate changing weather conditions. A moisture-wicking base layer, an insulating mid-layer, and a waterproof outer layer are ideal. Don’t forget a hat and sunglasses for sun protection.
- Footwear: Sturdy, comfortable hiking boots with good traction are a must, especially for the steeper, rockier trails.
- Navigation: While the trails at Chautauqua are well-marked, it’s always a good idea to bring a map or GPS device, especially if you plan to explore less-traveled routes.
- Safety Gear: A first aid kit, whistle, and headlamp are essential items to carry in case of emergencies.
Leave No Trace
Chautauqua is a beloved natural area, and it’s important to do your part to keep it beautiful for future visitors. Practice Leave No Trace principles by staying on designated trails, packing out all trash, and respecting wildlife and other hikers. If you’re hiking with a dog, be sure to keep them on a leash and clean up after them.
Permits and Regulations
No permits are required for day hiking at Chautauqua, but it’s important to be aware of the park’s rules and regulations. Dogs must be kept on a leash at all times, and cyclists are not allowed on most trails. The park is open from sunrise to sunset, and overnight camping is not permitted. Check the City of Boulder’s website for any trail closures or special regulations before your visit.
By following these tips and being prepared, you’ll be ready to enjoy a safe and memorable hike at Chautauqua, where the beauty of Boulder’s natural landscape awaits you at every turn.
Conclusion
The Chautauqua Trailhead in Boulder is more than just a starting point for hikes; it’s a gateway to some of Colorado’s most beautiful and diverse landscapes. This Chautauqua Trailhead hiking guide has introduced you to the best trails in the area, from the challenging climb to the First and Second Flatirons to the serene loop of the Enchanted Mesa and McClintock Nature Trails. Each trail offers something unique, whether it’s breathtaking views, rich ecological diversity, or a deep connection to Boulder’s geological history.
As you explore these trails, you’ll discover why the Chautauqua Trailhead is such a beloved destination for both locals and visitors. The variety of terrain, from open meadows to dense forests and rocky outcrops, ensures that every hike is a new adventure. Whether you’re seeking a strenuous workout or a peaceful walk in nature, this area has something for everyone.
This Chautauqua Trailhead hiking guide is your resource for planning an unforgettable outdoor experience in Boulder. So lace up your hiking boots, grab your gear, and set out on a journey that will leave you with lasting memories of Boulder’s iconic Flatirons and the stunning natural beauty that surrounds them.
What to Read Next:
Boulder Bound: Your Ultimate Adventure Playground
Hiking/Mountain Biking The Walker Ranch Loop Trail, Boulder, Colorado
Adventurer’s Guide To Mesa Verde National Park, Colorado
Best Hikes Within An Hour Of Boulder, Colorado
Adventure Awaits: The Best Hotels in Boulder, Colorado for Thrill-Seekers