Doomsday - Cool, CA

Cool, United States • 13 Dec 2025

Doomsday : Saturday, December 13, 2025, Cool, CA

Doomsday offers two distances at the Cool Staging Area (7200 Saint Florian Court, Cool, CA 95614): a 50K and a Half Marathon. The event field is limited to 200 runners total. Both distances start together at the Cool Staging Area. Hikers are welcome and trekking poles are allowed. Live tracking and real-time results are provided by UltraLive.net for each distance.

Race details and logistics

  • 50K
  • Half Marathon

The 50K has about 5,100 feet of total elevation gain and loss; the Half Marathon has about 1,250 feet. Cutoff times are 9.5 hours for the 50K and 5 hours for the Half Marathon. Aid stations on the 50K are at miles 8.88 (Knickerbocker Terror), 13.9 (The Dissent of the Descending), 20.9 (No Hands Horror), 23.1 (Robie Point Resurrection), and 27.9 (No Hands Horror). The Half Marathon has one aid station at mile 8.88 (Knickerbocker Terror). Early packet pick-up is Friday, December 12, 3:00–7:00 PM at Auburn CrossFit, 890 High Street, Auburn, CA 95603; race-morning packet pick-up is at the race start. Parking fees are not included in registration; participants must display a Golden Poppy Pass or purchase a day use pass ($10 exact cash). ultraPacer provides maps and GPX files; course routes are available on mapping platforms and Strava. Swag includes a race event shirt and a weighted finisher medallion; top-three men and top-three women in each distance receive custom trophies. Visit the organization's website for the most recent information.

Race information

50 km
5100 m+
50k
21 km
1250 m+
Half Marathon
Visit the organization's website for the most recent information.
Trail runs nearby

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