Doomsday - Cool, CA
Cool, United States • 13 Dec 2025
Doomsday : December 13, 2025, Cool, CA
Doomsday is a trail running event on December 13, 2025, at the Cool Staging Area, 7200 Saint Florian Court, Cool, CA 95614. The event offers the following distances:
- 50K
- Half Marathon
Entry is limited to 200 runners total.
Course and logistics
The 50K has about 5,100 feet of total elevation gain and loss. The Half Marathon has about 1,250 feet of gain and loss. Cutoff times are 9.5 hours for the 50K and 5 hours for the Half Marathon. Each course is described as hiker and back-of-the-pack friendly, and trekking poles are allowed. Live tracking and real-time results are provided by UltraLive.net for each distance. The 50K has aid stations at miles 8.88, 13.9, 20.9, 23.1, and 27.9; the Half Marathon has an aid station at mile 8.88.
Early packet pick-up is scheduled the day before the race at Auburn CrossFit in Auburn, CA; race morning packet pick-up is at the Cool Staging Area. Parking fees are not included in registration; participants should display a Golden Poppy Pass or purchase a day use pass for $10 (exact cash) on arrival. All finishers receive a race shirt and a weighted finisher medallion; top-three men and women in each distance receive custom three-dimensional trophies. Visit the organization's website for the most recent information.