Crested Butte Ultra

Saturday, October 2, 2021

105k and 55k

Crested Butte, CO

Race Starts: 105k, 53 Mile- 6 a.m., 55k- 7 a.m.

*105K and 50 Mile Course Rerouted in 2021, with updated start time

See email, sent via Ultrasignup, for updated information.

Aid Station Chart Updated with Cutoffs Below.

About Crested Butte Ultra

Crested Butte is known for having some of the best trails in the country. Runners will be challenged by this high altitude course. Its wide open views will amaze runners, as they traverse through Gunnison National Forest.  There will be wildflowers and the beginning of fall will bring the changing aspen leaves. The event will start and finish at the Crested Butte Community School.

Cupless Aid Station Information

That's right! We have gone cupless!


What does that mean?

  • Hands free water dispensers will be located at the start/finish line and at every aid station.

    • Runners can use these to fill bladders, bottles​

  • Gloved volunteers will pour sodas/misc drinks into runners' reusable cups.

  • To further reduce waste at aid stations, runners may bring a small reusable bag or bowl for food to be served into.

    • Reusable bowls are optional but a great way to reduce waste.

Click here for all Aid Station and Cut Off Information

Packet Pickup

Race Information:

Packet Pick-up:

Friday, October 1, 2021

4 p.m. – 6 p.m.  

Location: Crested Butte Community School

Check-in and Packet Pickup at the starting line:

Saturday, October 2, 2021

Crested Butte Community School

5:30 a.m.-6:45 a.m.


*You will need to have a photo ID in order to receive your packet and timing chip.  This includes race morning packet pick-up.  We encourage you to pick up your packet prior to race day morning to eliminate issues on the morning of the race.  

Directions to the Start 

Directions to Start and Finish:

The start and finish line are located at the Crested Butte Community School. 818 Red Lady Avenue. Crested Butte, CO. 

Race Morning Schedule

Race Morning Schedule:

6:00 a.m. - 105k, 53 Mile Start *Course rerouted. *See email, via Ultrasignup, for information.  

7:00 a.m. - 55k Start 

Finish Line

We will be serving runner approved goodies. 

Traveling to Crested Butte
Runner Perks

All runners will receive a custom Hydrapak reusable cup,  custom race shirt, custom BOCO hat, and a finisher's buckle. 


For information about pricing, cancelations, no refund policy, and race rules see our FAQ Page