Doomsday 50K & Half Marathon
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Doomsday : December 12, 2026, Cool, CA
Doomsday is an in-person trail running event held in Cool, California, with two distance options and a total field limit of 200 runners. Both distances begin together at the Cool Staging Area, 7200 Saint Florian Court.
Distances
- 50K: 5,100 feet gain/loss; 9.5-hour cutoff; multiple aid stations.
- Half Marathon: 1,250 feet gain/loss; 5-hour cutoff; one aid station.
The 50K includes aid stations at Miles 8.88, 13.9, 21.2, 23.1, and 27.8; the Half Marathon has an aid station at Mile 8.88. There is a mandatory intermediate cutoff at the Robie Point aid station on the 50K course. Trekking poles are allowed and courses are described as hiker and back-of-the-pack friendly.
Packet pick-up is available Friday, December 11, 3:00–7:00 PM at Auburn CrossFit, 858 High Street, Auburn, CA, and on race morning at the Cool Staging Area. Parking fees are not included; participants should display a Golden Poppy Pass or purchase a day use pass for $10 cash. Volunteers will direct parking to the Day Use Lot or overflow parking on Haul Road.
The event provides GPX files and detailed maps via a sponsor, real-time tracking and results through UltraLive, race shirts for participants, weighted finisher medallions, and custom trophies for the top three men and women in each distance. Visit the organization's website for the most recent information.
