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Folsom 100

Name: Folsom 100
Start: 2025-08-01
End: 2025-08-01
Location: Granite Bay

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.

United States California Granite Bay

Race information

Website

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

Thursday Jun 25

Run Fast or Pretend Like You Are 100 Mile Relay

Auburn

1 mi

100 mi

A community relay on Auburn trails with 100 one mile legs and a separate 100 mile virtual challenge completed over 25 days, both offering tracking options and a finisher item for virtual participants.

Saturday Jul 11

Iron X

Auburn

Half Marathon

Iron X pairs a half marathon in Auburn with extreme ironing at eight town locations. Participants must be self supported, carry their own board and battery iron, and record video proof at each site.

Sunday Jul 26

Blood, Sweat & Beers

Auburn

6 mi

11 mi

A trail run in Auburn on July 26, 2026 featuring 10.5 mile and 5.9 mile routes through single-track canyon trails, canal sections and dirt roads, with a tech shirt, finisher medal and post-race food and beer for those 21 and older.

Sunday Aug 23

The Good Dog-Dirty Dog 10K Trail Run

Granite Bay Main Beach

5 km

10 km

A trail event at Granite Beach on August 23, 2026 offering 5K and 10K courses for runners and their dogs, with finisher medals and dog bandanas; aid stations provide drinks and gels and dogs have their own water.