A point-to-point 100-mile footrace along the beautiful Cowboy Trail in Nebraska.  This is a rails-to-trails course and will be run on crushed gravel.

Cowboy 100

• Starts April 17, 2027 @ 7:00 AM in Valentine, NE
• The course will start in Valentine and head east along the Cowboy Trail to Atkinson.

Runner’s Manual Coming Soon!

The Cowboy Slam

Those who do both the Cowboy 100 and the Cowboy 200 in the same calendar year get an extra buckle at the end of the Cowboy 200. 

NO REFUNDS
NO BIB TRANSFERS

Entry can be deferred for 100% race credit if done at least 3 months prior to the race.
Entry can be deferred for 75% race credit if done at least 2 months prior to the race.
Entry can be deferred for 50% race credit if done at least 1 month prior to the race.

NO DEFERRALS AFTER MARCH 17th. No credit will be given after this date.

Please understand that there are no exceptions to these timelines. Please, don’t ask us to make one (we won’t).

•Races should deferred/withdrawn from BY THE RUNNER, rather than by messaging/emailing us.

• You will earn credit for ANY Ultraverse Supplements race, rather than being limited to the race in which you cancelled/deferred.

• The credit will be attached to your Ultrasignup account and will automatically apply the next time you register for an Ultraverse Supplements event. Note – sending an email to us does not initiate the cancellation of your registration. You must do this yourself for the credit to apply. You can do this by signing into Ultrasignup and then going to your registrations and clicking “edit”.

• Your credit appears in your registration history under “outstanding credits and coupons”.

Runners will receive a Cowboy 100 tri-blend shirt and a Cowboy 100 bag. Additional freebie items will likely be included in runner swag bags.

All 100-mile finishers will receive a Cowboy 100 finisher’s buckle

1^st, 2^nd, and 3^rd place runners in both men’s and women’s races will receive additional awards (TBD).

Register Now!

COWBOY HALL OF FAME

Runners who total 1,000 miles between the Cowboy 200 and 100 will be inducted into the Cowboy Hall of Fame. With the separation of the Cowboy 200 & 100, you can accumulate 300 miles/year toward this achievement! Hall of Famers will receive an EPIC, top-of-the-line Cowboy HOF Sheridan buckle, with their name. Additionally, those who reach HOF status will receive 50% off all future entries to the Cowboy 200/100! They will also be featured on the Cowboy 200 page on our website. This is a small way of saying thank you for being a staple in the incredible Cowboy Family.

Eventually, we will have people approaching the 2000 total mile mark at Cowboy. We WILL come up with something extraordinary to honor these people when the time comes. There will be another top-of-the-line piece of swag (TBD), and all future entries to Cowboy will be free for life.