Event Date:

Saturday, August 07, 2021

End Location:

Rio Grande Park

Registration Closes:

August 4, 2021

Presented By:

Aspen Parks & Recreation

2019 Race Results Click Here

2018 Race Results are in, click here.

BACKCOUNTRY MARATHON | SATURDAY, AUGUST 07, 2021 Aspen's most scenic running race...not to be missed.

Registration opens February 1, 2021.

The Aspen Backcountry Marathon has been canceled for 2020. Unfortunately, due to the uncertainty surrounding the current public health orders in Pitkin County, we believe this decision is the only responsible solution. While we would have loved to put on another memorable event this year, the health and safety of our participants, volunteers and staff as well as the entire Pitkin County community, remains our highest priority.

We look forward to seeing you in 2021.

Registered participants will be receiving an email shortly (check your junk folder) regarding deferring to next year or requesting a refund.

Click Here  To Check out the Short Mini Film from Tom Evans on the Western States “Zero to 100”

Utilizing the beautiful trails that surround Aspen, offering two options, a full or heavy half-marathon, both run almost exclusively on dirt trails. The diversity of terrain, challenging ascents & descents and overall elevation gain will challenge even the most well-trained athletes. With spectacular views of the Elk Mountains above and the city of Aspen below, this is one race you’ll be sure to remember! And…there is over $8,000 in cash and prizes.

This race will be a limited support race. There will be aid stations, portable toilets at the start/finish, volunteer crews, timers, and mile markers. There is volunteer medical personnel along the course and at aid stations, but there is no guarantee of rescue or medical attention. Each participant is ultimately responsible for their own rescue and preparation for course and weather conditions.

Registration Info

Details to follow
Full Marathon

  • Feb 1 – August 4th  : $80

1/2 Marathon (14.6m) 

  • Feb 1 – August 4th: $75

250 participants


Marathon Cash Purse:
1st place Male and Female = $600
2nd place Male and Female = $400
3rd place Male and Female = $200

Half Marathon:
1st place Male and Female = $100 Adidas Gift Card

Top Three finishers by age-group for the Marathon  (19 and under, 20-29, 30-39, 40-49, 50-59, 60+) will receive an Adidas gift certificate for $100.

Top Three finishers by age-group for the 1/2 Marathon  (19 and under, 20-29, 30-39, 40-49, 50-59, 60+) will receive an Adidas gift certificate for $75.

Because of the duration of the event, awards will be handed out at the finish line once results are verified.

All finishers will receive a stainless steel mug, with a ticket for lunch & a beverage.

The Aspen Backcountry Marathon and Half Marathon will be CUPLESS COURSES!  We recommend that participants use their own hydration system on this backcountry course. 

FAQ's Commonly Asked Questions.

Here are the overall results Aspen Backcountry Marathon Results by Age Group  

Keep the environment in mind as you start your training and on race-day, and we together will abide by the Leave No Trace outdoor ethics to help maintain the pristine conditions of our backcountry and forests. A No Cup policy on the race course is in place, so there will be no paper cups at the aid stations, so please carry your own reusable cup or use your own hydration system that can be refilled at the aid stations. 

The Backcountry Marathon was a huge success. We had over 301 participants and you an view the running results below. 2016 Results
The course has changed over the years, additionally we will also reverse the race direction on alternating years to keep it interesting!

The race committee is happy to share that the courses are both now almost entirely on single track and dirt trails.

Please note that Pitkin County requires that all participants obtain a valid CORSAR card for the day of the event. These are available at the Ute Mountaineer and the Tenth Mountain Hut Association. Save yourself some time and purchase online. Click here to purchase online. Cost: $3.00 for a one year card; $12.00 for five years

Yes, if you are local you can join the training group, sponsored by Aspen Alpine, additionally for those not local sign up to be part of the mail list on training for high altitude and more great tips. More info: marathontraining@aspenalpine.com | (970) 925-6618

This year the Cash Purse for the marathon totals $2400. Marathon: 1st place Male and Female = $600 2nd place Male and Female = $400 3rd place Male and Female = $200

Prizes for top finishers are equal for Male and Female racers as well as the King of the Mountain. Thank you to our sponsor Adidas for these great prize donation.