The Last Cowboy Backyard

Every runner receives a high-quality race shirt and a belt buckle displaying their exact completed mileage.

• Runners who complete over 200 miles receive a personalized Sheridan buckle.
• The overall winner also receives a Sheridan buckle.
• The winner, assist(s), and last runner standing of the opposite sex receive complimentary entry to the following year's Last Cowboy Backyard.

The start/finish at the O'Neill Community Center has spacious indoor and outdoor areas just steps from the starting corral, for resting, refuelling and preparing for the next yard.

The Community Center provides a climate-controlled indoor space with tables, chairs and restrooms. Runners may also set up their own crew areas outside near the corral.

Water, Proxima C Endurance Fuel and Proxima C Ultra are provided throughout the event. Runners should bring their own food, additional nutrition and any personal supplies. Crew members are welcome, but runners may also take part without a crew.

Crew assistance is permitted between yards in designated areas. Runners may not receive outside assistance while completing a yard.

The Last Cowboy follows the official Backyard Ultra format. Runners must complete a 4.167-mile yard every hour, on the hour, until only one runner remains.

• Each yard begins at the top of the hour, and runners have 60 minutes to complete it.
• Between yards there are 15 minutes to rest, refuel and get ready.
• Runners who fail to finish within the hour, or are not in the starting corral when the next yard begins, are out of the race.
• There is no predetermined finish distance or time limit. The race continues until only one runner completes the final yard.
• No outside assistance is allowed while completing a yard.

There is only one official winner, but everyone's accomplishments are recognized. The Runner's Manual contains the complete event rules and requirements.

There are no refunds and no bib transfers. Only race credits are offered, based on how far in advance you withdraw.

Race credit schedule

• 60 or more days before the race: 100% credit
• 30–59 days before the race: 50% credit
• 14–29 days before the race: 25% credit
• Less than 14 days before the race: no credit

These deadlines are firm, and no exceptions are made.

How to withdraw

• Withdraw yourself through UltraSignup: log in, go to your registrations, select the event and click "Edit" to withdraw.
• Email or messages to the organizers do NOT withdraw you or qualify you for a race credit.
• If you do not withdraw at least three days before the race, you will be listed as DNS (Did Not Start). This does not change the race credit deadlines above.

How your race credit works

• The credit can be used toward registration for any Ultraverse Supplements race, not just The Last Cowboy.
• The credit is attached automatically to your UltraSignup account and applied when you register for another eligible Ultraverse event.
• Available credits appear under "Outstanding Credits and Coupons" in your UltraSignup registration history.
• Credits are valid for one year from the date of withdrawal, are nontransferable, and must be redeemed with the same UltraSignup account as the original registration.