Race Announcements

Participant cancellations before March 31, 2025 are granted a 50% refund. There is NO REFUND available after March 31, 2025. We do not roll-over race entry fees to next year. 

THE 2025 18M IS FULL! 

 ENTER THE WAIT LIST

VIEW THE WAIT LIST

Entries cannot be transferred to another runner. If you cancel your entry, we will allow another person on the wait list the opportunity to participate. 

The schedule for race week can be found at:

Schedule

Bighorn 100M generously allows pacers from mile 30 (Sally's Footbridge) on the outbound. Pacers, please be considerate and carry your supplies including food and drinks. Bighorn Trail Run plans and provides supplies, food, and drinks for participants, but we do not plan for pacers as they are not entered in the event. We are proud we offer pacing earlier than most events to allow runners to have a pacer through the night, and we do not limit the number of pacers a participant can use while on course. Our aid stations are prepared for all participants entered, but not for pacers on course. Thanks for your understanding. 

Bighorn Trail Run is a "cupless" event. Each participant will be provided a reusable,  packable cup. It is required to carry a reusable cup/bottle for liquids at aid stations. Runners can choose to carry a bottle in lieu of the provided cup. Every participant must have a vessel to hold liquid at the start of the race. If you fail to carry a cup it's on you, we will not give you anything else at an aid station.  

Each runner will be allowed 1 crew member inside the Aid Station area/tent while inside at DRYFORK, SALLY'S FOOTBRIDGE, and JAWS. All CREW waiting must be done outside the Aid Station area/tent. CREWS please come prepared to wait in freezing temperatures at JAWS and SALLY'S.  Runners are allowed to be "CREWED" within 100 feet of the Aid Station. 

ALL race vehicle travel is PROHIBITED on  TONGUE CANYON ROAD after NOON on Friday, June 20, 2025.

ALL RACE VEHICLE travel (excluding volunteer and homeowner) is prohibited completely on June 21, 2025

Bighorm Trail Run will be STRICTLY enforcing this race rule.

Failure to abide by race rules will result in disqualification of the runner/participant. Pedestrian and bicycle access is allowed any time during the race.

-Can I wear warm clothes to the start? YES! You can leave items on the bus to be returned to Tongue River Community Center where the bus loads.

-What if my pacer cannot make it to packet pick-up?  Pacer waivers and bibs can be signed and picked up at the following aid stations: JAWS, Sally's, Dryfork.

-What if I can't make it to packet pick-up? We will have a bib and bus ticket pick-up at Tongue River Valley Community Center in Dayton WY from 2:45AM to 8:30AM Saturday, June 21, 2025.

-Will there be MUD? YES!