Folsom 100

Granite Bay, United States • 1 Aug 2025

The Folsom 100 is an exhilarating 100-mile ultramarathon that takes place around Folsom Lake, California. Scheduled for August 1, 2025, this challenging race features a point-to-point course with a single out-and-back section. Participants have 34 hours to complete the loop, which includes stunning views and diverse terrain, primarily on trails with some paved sections.

The event also offers a 54-mile race and a 100-mile two-person relay option. Runners can expect multiple aid stations and awards for finishers, including buckles for those completing the 100-mile distance. Proceeds from the race support local charities. Visit the organization's website for the most recent information.

Race information

100 mi
100 Miles
54 mi
54 Miles
20 mi
20 Miles
Visit the organization's website for the most recent information.
Trail runs nearby

Experience the final 70 miles of the Western States trail during this three day training event featuring supported runs of 19, 20, and 32 miles through iconic canyon terrain and mountain climbs.

A trail event on the El Dorado Trail in Placerville on May 23, 2026, offering distances from a kids run to a half marathon, paved and unpaved sections, aid stations, color-coded course markings, and medals for finishers.

A 10km trail run on the Olmsted Loop at Auburn State Recreation Area in Cool, California on June 6, 2026. The race takes place the same day as the Coolest Ride and Tie and Equathon events.

The Cool Summer Night Run will take place in Cool on Saturday 6 June 2026. You can run 10 kilometers.

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