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Crested Butte Ultra
35k, 55k, and 50 Mile
September 30, 2023
Crested Butte, CO

2023 Crested Butte Ultra is sold out.

We are thrilled to share that the Crested Butte Ultra has reached full capacity and is officially sold out! The overwhelming response and enthusiasm from all of you has been truly incredible, and we thank you for your tremendous support. Unfortunately, due to the limited number of available spots, we regret to inform you that we will not be hosting a waitlist or allowing additional registrations at this time. We understand your excitement and eagerness to be part of this amazing event, and we sincerely apologize for any inconvenience this may cause. We appreciate your understanding and encourage you to stay connected with us for future updates and events. We value your support and hope to welcome you to the Crested Butte Ultra in the future.

About Crested Butte Ultra

Crested Butte is known for having some of the best trails in the country and runners get to experience it all at Crested Butte Ultra! Traversing through the Gunnison National Forest, runners will be amazed at the wide open views!  Single track trails take runners through beautiful mountain meadows and up to stunning mountain ridges. At the lower elevations, stunning wildflowers set against mountain backdrops will greet runners as they work their way up the course.  Fall foliage rivaling New England will distract them from the heart pumping climbs.  Come enjoy a weekend getaway in this quintessential mountain town! Crested Butte Ultra is authorized under special use permit with the Grand Mesa, Uncompahgre, and Gunnison National Forests.

Crested Butte Ultra Race Guide

See the 2023 Race Guide

Cupless Aid Station Information

That's right! We have gone cupless!


What does that mean?

  • Bring your own re-useable cup (Mad Moose Hydrapak cups are available for purchase during packet pick-up)

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

  • Runners can use these to fill bladders, bottles​, and reusable cups

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

Packet Pickup

Date: Friday, September 29, 2023

Time: N/A 

Location: N/A

There is no pre-race packet pickup in order to work with Crested Butte Community High School, as their Homecoming Parade will be happening in town on Friday evening.

Race Day Packet Pickup

Saturday, September 30, 2023

Crested Butte Community School

5:00 a.m.-7:45 a.m.


Information Regarding Packet Pickup Process:

  • You will need to have a photo ID in order to receive your packet.

  • Runners may pick up the goody bag and shirt of a registered runner who will not be in attendance.

  • Runners may not pick up someone else's bib.  

  • Entries are non-transferable

  • See race guide for all information about packet pickup.

Directions to the Start 

The start and finish line are located at:

Crested Butte Community School

818 Red Lady Avenue

Crested Butte, CO

See parking map

GPS Coordinates (Click for Google Maps)

38°51'52.2"N 106°58'31.8"W

Race Morning Schedule

Race Day Packet Pickup

Saturday, September 30, 2023

Crested Butte Community School

5:30 a.m.-7:45 a.m.

6:00 a.m. - 50 Mile Start  

7:00 a.m. - 55k Start 

8:00 a.m. - 35K Start

10 minutes before each race start - pre-race announcement


Finish Line

The finish line is in the same location as the starting line. We will be serving runner approved goodies. 

Traveling to Crested Butte

Check out the Visit Crested Butte site for more details.

Runner Perks

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


The FAQ Page contains information about:


-Race Rules

-Distance Changes

-Cancelation, transfer, and no refund policy

-Other Runner Requirements​


Crested Butte Ultra results are posted on Ultrasignup.

Volunteer with Mad Moose

Join the Mad Moose Herd and make a difference in the running community by volunteering at one of our upcoming events. As a volunteer, you'll have the chance to support your favorite race company and help fellow runners achieve their goals. And as a thank you for your time and effort, we offer credits toward free race entries of your choice. (Friends and Family - You can earn race credits for your runner to use toward their next Mad Moose Event!)

But volunteering isn't just about the rewards - it's also a chance to give back to this amazing community and be a part of something truly special. Whether you're a seasoned runner or just love being a part of the action, we have volunteer opportunities for everyone.

Click here for more information on how you can get involved and make a difference. Together, we can create unforgettable experiences for runners and show our appreciation for this incredible community.

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