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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

Saturday May 2

Folsom Lake Trail Run

Trail races from Browns Ravine Marina follow out-and-back lakeside trails with 10K, half marathon, 35K and 50K options; aid stations appear every 4 to 6 miles and all finishers receive a custom medal.

Saturday May 9

Dirty Secret Trail Run

Cool

6 mi

10 mi

A spring trail race in Cool presented by Altra, Dirty Secret offers two single-track courses through meadows, hills and a creek crossing. The event is limited to 600 runners and includes a tech shirt and finisher medal.

Saturday May 16

Wild Rose Half Marathon

Roseville

5 km

13 mi

Wild Rose Half Marathon & 5K The Wild Rose Half Marathon & 5K takes place in Roseville, California. The event starts and finishes at the Moksa Barrel House on Foothills Boulevard. The event offers three distances: Half Marathon: Th..

Sunday May 17

Mud Factor - Sacramento

Elk Grove

Mud Run / Obstacle Run

5 km

Mud Factor Sacramento is a 5K mud and obstacle run at the 300 acre Mahon Ranch in Elk Grove on May 17, 2026. The event includes adult and KIDZ family waves, a festival area with paid spectator access, and required signed waivers.