Guidebook

7 of the Most Iconic Trail Running Routes in Aspen, CO

Explore Aspen's legendary trails with these 7 recommended trail running routes.

Description

Aspen has reigned for years as one of the top hiking destinations in the state of Colorado. And as trail running has exploded in popularity in the past decade, runners have flocked to Aspen’s stunningly-beautiful singletrack trails in greater and greater numbers. While the trails have stayed exactly the same, the perspective on these classic routes has radically transformed.

Where hikers might take 2-4 days to complete the iconic Four Pass Loop, many competent trail runners can tackle the marathon-length route in less than a day. For a real challenge, trail runners set their sights on the 40-mile Grand Traverse Mountain Run that crosses the Elk Range from Crested Butte to Aspen.

But of course, a trail run doesn’t always have to be ultra-length to be beautiful and epic. Other runs in this guidebook, like Cathedral Lake, are much more achievable and are still stunningly beautiful. The trail options in Aspen are nearly endless, so narrow down your search for the perfect route by digging into this guidebook!

Grand Traverse Mountain Run
The best Routes on FATMAP, hand-picked by FATMAP’s Editorial team.

Grand Traverse Mountain Run

Crested Butte
65.2 km
2,265 m
2,548 m
Famous point-to-point race route from Crested Butte to Aspen.
Difficult
Private
West Maroon Trail: Aspen to Crested Butte
The best Routes on FATMAP, hand-picked by FATMAP’s Editorial team.

West Maroon Trail: Aspen to Crested Butte

Aspen Summer
16.6 km
964 m
708 m
Beautiful backcountry run between two of Colorado's most famous mountain towns.
Difficult
Private
The Four Pass Loop
The best Routes on FATMAP, hand-picked by FATMAP’s Editorial team.

The Four Pass Loop

Aspen Summer
41.9 km
2,415 m
2,415 m
An epic jaunt through Colorado's Elk Mountains.
Difficult
Private
Buckskin Pass -> Willow Pass -> Willow Lake
The best Routes on FATMAP, hand-picked by FATMAP’s Editorial team.

Buckskin Pass -> Willow Pass -> Willow Lake

Aspen Summer
22.4 km
1,390 m
1,390 m
An epic trail run featuring multiple alpine passes and lakes.
Difficult
Private
Cathedral Lake
The best Routes on FATMAP, hand-picked by FATMAP’s Editorial team.

Cathedral Lake

Aspen Summer
8.8 km
643 m
643 m
Run to a stunning alpine lake nestled high in the mountains.
Moderate
Private
American Lake
The best Routes on FATMAP, hand-picked by FATMAP’s Editorial team.

American Lake

Aspen Summer
9.4 km
616 m
616 m
One of the quintessential trails in Aspen.
Moderate
Private
Conundrum Hot Springs
The best Routes on FATMAP, hand-picked by FATMAP’s Editorial team.

Conundrum Hot Springs

Aspen Summer
27.0 km
877 m
877 m
Colorado's most popular hot springs trail run.
Moderate
Private