Registration for the 2025 Devil Dog Ultras opens on January 1 on UltraSignup. Register here. Race date is December 6-7, 2025.
The 100-miler is $275. The 100k is $230. The 50k is $115.
The price will increase on March 1 ($295, $240, and $125) and on October 6 ($320, $265, and $135).
Entry is limited to a total of 300 runners, with a waitlist if the race fills. Registration will close about a week before the race.
To register for the 100-miler, you must have completed a 50-mile race within the past two years. (This means we can find your name on an official finisher list on a race website.) There is no entry requirement for 100k, but don’t be a dummy—if you’ve never run an ultra before, this is probably not the best starting point.
We’re no longer able to offer refunds. If you find yourself unable to run, you can transfer your bib to another person. The new runner must have completed a qualifying race, and bibs cannot be transferred to a different race distance. (For example, if you signed up for the 100K, the runner taking your place must also do the 100K.) There will be a $20 fee for the new runner, and we will handle the transfer in Ultrasignup. You will be responsible for funding and collecting your entry asking price from the new runner. Bib transfers must be completed by Nov. 7.
For to transfer your bib, please email the race director here.
Race swag will be announced on the Marine Corps’ birthday, Nov. 10.
In the event that COVID restrictions, inclement weather, or another situation forces the cancellation of the race, the race director has full discretion on how to handle any refunds or deferrals.