The Best Trail Running Locations in Aspen, Colorado

Nestled in the heart of the Rocky Mountains, Aspen, Colorado, is more than just a world-famous ski destination—it’s also a paradise for trail runners. With breathtaking alpine scenery, rugged peaks, and trails that wind through lush forests and meadows, Aspen offers some of the most scenic and challenging running routes in the country. Whether you’re chasing elevation gains, looking for peaceful singletrack, or training for a race, Aspen’s trails have something to offer every level of trail runner.

Here are the best trail running locations in Aspen, Colorado, to elevate your running game and connect with nature.

1. Smuggler Mountain Road

Distance: 6 miles (out and back)Difficulty: ModerateHighlights: Stunning views of Aspen and its surrounding mountains

A local favorite, Smuggler Mountain Road is one of the most popular trail running spots in Aspen. Starting just outside of town, this well-maintained dirt road climbs steadily to a scenic overlook offering panoramic views of Aspen and the Roaring Fork Valley. You can continue on connecting trails for more mileage or stick to the main route for a great workout.

Why It’s Great for Trail Running:

• Conveniently located near downtown Aspen.

• A steady, runnable climb with rewarding views.

• Perfect for runners looking to build strength and endurance.

2. Maroon Bells Scenic Area

Distance: Varies (4 to 26 miles depending on the trail)Difficulty: Easy to challenging (depending on the route)Highlights: Iconic views of the Maroon Bells, alpine lakes, and wildflowers

The Maroon Bells are among the most photographed peaks in North America, and running here is an unforgettable experience. Trails like the Maroon Lake Scenic Loop (1 mile) are perfect for beginner runners, while more adventurous trail runners can tackle the Four Pass Loop (26 miles), which offers jaw-dropping alpine scenery, multiple mountain passes, and a challenging elevation profile.

Why It’s Great for Trail Running:

• Incredible high-alpine scenery and diverse trail options.

• Opportunities to spot wildlife and experience pristine wilderness.

• One of Colorado’s most iconic outdoor destinations.

Pro Tip: The Maroon Bells area requires reservations for vehicle access during peak seasons, so plan ahead or use the shuttle system.

3. Rio Grande Trail

Distance: 42 miles (but you can run shorter sections)Difficulty: Easy to moderateHighlights: Flat, scenic trail following the Roaring Fork River

The Rio Grande Trail is perfect for runners seeking a long, relatively flat trail with stunning views of the river and surrounding mountains. Starting in Aspen, the trail follows the old Rio Grande railroad route and stretches all the way to Glenwood Springs. Whether you’re looking for a short recovery run or a long-distance effort, this trail is a fantastic choice.

Why It’s Great for Trail Running:

• Smooth surface and gentle grade make it beginner-friendly.

• Gorgeous views of the Roaring Fork River and nearby peaks.

• Easily accessible from Aspen and perfect for point-to-point runs.

4. Hunter Creek Trail

Distance: 5 miles (loop) or more with extensionsDifficulty: ModerateHighlights: Shaded forest, creek crossings, and views of the Hunter Valley

The Hunter Creek Trail is a classic Aspen trail that starts just a short distance from downtown. This scenic route winds through aspen groves, alongside Hunter Creek, and up into the beautiful Hunter Valley. The trail is shaded and cooler, making it a perfect choice for hot summer days. You can extend your run by connecting to Smuggler Mountain Road or other nearby trails.

Why It’s Great for Trail Running:

• Beautiful mix of creekside trails and forested singletrack.

• Easily accessible and close to Aspen’s downtown.

• Moderate difficulty with a mix of runnable terrain and gentle climbs.

5. Cathedral Lake Trail

Distance: 5.6 miles (round trip)Difficulty: ChallengingHighlights: Alpine lake, wildflowers, and views of Cathedral Peak

For runners seeking a high-altitude challenge, the Cathedral Lake Trail is a must. This steep and technical trail climbs through dense forest and alpine meadows before reaching the stunning Cathedral Lake, one of the most picturesque alpine lakes in Colorado. While it’s a challenging run due to the steep ascent, the breathtaking views make it well worth the effort.

Why It’s Great for Trail Running:

• A rewarding challenge for advanced runners.

• Stunning alpine scenery and crystal-clear lake views.

• Great for building strength and acclimating to altitude.

6. Government Trail

Distance: 15 miles (point-to-point)Difficulty: Moderate to challengingHighlights: Rolling singletrack, meadows, and views of Snowmass and Aspen Highlands

The Government Trail is a favorite among Aspen locals and visitors alike. This point-to-point trail connects Snowmass and Aspen, offering rolling singletrack through dense forests and meadows with incredible views of the surrounding mountains. It’s a challenging run with technical sections and plenty of elevation change, but the flowy terrain makes it enjoyable for intermediate and advanced runners.

Why It’s Great for Trail Running:

• A true mountain running experience with varied terrain.

• Gorgeous views and a sense of solitude in nature.

• Perfect for runners looking for a longer, point-to-point adventure.

Pro Tip: Plan for a car shuttle or use public transportation if running the full point-to-point route.

7. Lost Man Loop

Distance: 8.8 miles (loop)Difficulty: Moderate to challengingHighlights: High-altitude lakes, mountain vistas, and peaceful alpine meadows

The Lost Man Loop, located along Independence Pass, is one of the most scenic high-altitude trails in the Aspen area. This loop climbs past two stunning alpine lakes—Lost Man Reservoir and Independence Lake—before descending through wildflower-filled meadows. The trail offers a challenging but rewarding running experience at over 10,000 feet.

Why It’s Great for Trail Running:

• Stunning high-alpine scenery with fewer crowds.

• A mix of runnable terrain and technical sections.

• Great for acclimating to higher altitudes and preparing for races.

8. Sunnyside Trail

Distance: 10 miles (out and back)Difficulty: ModerateHighlights: Panoramic views of Aspen, open meadows, and gentle climbs

The Sunnyside Trail lives up to its name, offering sunny, south-facing terrain with sweeping views of Aspen and the Roaring Fork Valley. This trail winds through open meadows and forests, with steady climbs and descents that make it a perfect route for a longer run.

Why It’s Great for Trail Running:

• Fantastic views of the surrounding mountains and valleys.

• Less technical, making it a great option for intermediate runners.

• A peaceful escape with plenty of opportunities to spot wildlife.

9. Independence Pass Trails

Distance: Varies depending on the trailDifficulty: Moderate to challengingHighlights: High-altitude routes, rugged peaks, and pristine wilderness

The Independence Pass area offers several trails for trail runners seeking adventure and high-altitude challenges. Trails like Linkins Lake and Mountain Boy Gulch feature stunning views, alpine lakes, and technical terrain. The thin air at over 12,000 feet will test even the most seasoned runners, but the dramatic scenery makes it worth the effort.

Why It’s Great for Trail Running:

• High-altitude terrain perfect for serious runners.

• Incredible views of Colorado’s rugged mountain landscapes.

• Opportunities for solitude in a remote, pristine environment.