June 14-16, 2019

Race Dates June 14-16, 2019

100 m online reg. opens 

October 15 2018, 6 AM MDT

50, 32, 18 m reg. opens 

Jan 5, 2019 6 AM MST

Click Here: Race Announcements

Welcome to Bighorn


Welcome to the Bighorn Mountain Wild and Scenic Trail Run.   We welcome you with our western hospitality and extend our most cordial invitation to a remote rugged test of your endurance. 

We created this ultra-running event to preserve the atmosphere of the Bighorn Mountains once threatened by a west coast power development strategy called the “Dry Fork Project”. Through the commitment and perseverance of a few dedicated outdoor enthusiasts, attention to the potential fate of our mountains became a local concern. Ultimately, the “Dry Fork Project” was tabled and Bighorn Trail Run was born.


Bighorn is founded on values and beliefs that knit us together as a family. We provide a multi-event experience created by a community for a community, meeting everyone’s desire for challenge. We value family, friendships, thoughtfulness, hard work, consistency and nature’s beauty – all the essentials required to get you to the finish line. However, don’t let Bighorn mislead you, it is a tough contender in the ultra-world boasting its name on the top 10 most difficult ultras in the nation. We met with Mother Nature to custom design a challenging course: full of steep climbs, difficult down hills, shoe sucking mud and relentless technical terrain leading you to spectacular views with a possible wild life encounter here or there.  Participants, be prepared to endure extreme ever-changing mountain weather conditions and temperature variations. This runner’s trail is the showcase of the human spirit.

Our commitment to you: During your time in our beautiful backyard, we commit to providing a team of tough and rugged individuals supporting you. Consider these experienced volunteers your trail family. With their commitment to lifting up a fellow human they provide well-stocked aid stations, first aid, and a fun atmosphere. Be aware however, much like you, these volunteers also endure sleep deprivation and harsh mountain conditions. Show them your appreciation and don’t be surprised when they encourage you to pull up your bootstraps so you can head on down the trail to claim your finish. After all, it did seem like a good idea during the winter time sign-ups. Yeehaw! 

Please continue to "RACES" tab to see specific information about the race you entered. See you in June ! 


Bighorn Race Store


2018 Bighorn Participant Photos


race announcements

Coming Soon!


Participant Handbooks! Each race distance will have a handbook. Participants are responsible for all information in the handbook. All race rules and regulations will be listed, as well as important race information, CREW and Pacer information, and maps.  The handbook will be a download document. There will be NO paper handbooks available at race registration so be sure to print your copy before traveling to Wyoming.  2019 Handbooks will be available on or before June 1, 2019. 



In 2019 we will provide every participant with a handy HYDROPAK collapsible race cup to carry with them to use for ALL liquids consumed on course. There will NOT be any cups, bowls, etc on course. All participants must show that they have the provided cup or something that holds liquids at start check in before each race. 

ATTENTION 52 mile alumni!


52 mile race becomes a true 50 miler in 2019!

Cut off times remain the same, start will be relocated to Devils Canyon Road.   Exact start location to be announced at a later date with GPS coordinates and formal driving directions. 

Bighorn Trail Run is operated under a special use permit with the Bighorn National Forest and is an equal opportunity provider.   

To file a complaint of discrimination: write USDA, Director, Office of Civil Rights, Room 326-W, Whitten Bldg, 1400 Independence Ave, SW, Washington, DC 20250-9410 or call (202) 720-5964 (voice and TDD).

And Justice For All (disclaimer) (pdf)