Saturday, October 2, 2021

105k and 55k

Crested Butte Mountain Resort

Crested Butte, CO

Race Starts: 105k, 53 Mile- 4 a.m., 55k- 7 a.m.

About Crested Butte Ultra

Crested Butte is known for having some of the best trails in the country.  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.

Course Information

Elevation Gain: 105K- 15000 ft, 53 Miler- 11000ft,  55k- 7000 ft

Course Maps

Aid Station and Cut Off Information

Race Guide
Packet Pickup

Race Information:

Packet Pick-up:

Friday, October 1, 2021

105k and 53 Mile runners must check in on Friday

4 p.m. – 6 p.m.  

Location: TBD

Check-in and Packet Pickup at the starting line:

Saturday, October 2, 2021

Crested Butte Community School

55k only

6 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:

3:55 a.m. - 105k, 53 Mile Pre-race announcement

4:00 a.m. - 105k, 53 Mile Start

6:55 a.m. - 55k Pre-race announcement

7:00 a.m. - 55k Start 

Finish Line

We will be serving runner approved goodies. 

Runner Perks

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


For information about prices, cancelations and race rules, see our FAQ Page