Sonoma Fall Classic
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Sonoma Fall Classic : Lake Sonoma, California (October 17-18, 2026)
The Sonoma Fall Classic is a multi-distance trail running event at Lake Sonoma near Geyserville, California. Distances offered include:
- 100 Mile
- 50 Mile
- Marathon
- 100 Mile Relay (4-person) and 50 Mile Relay (4-person)
The 100 Mile course is a 100.5 mile two-lap route with a 36 hour time limit and about +25,058 feet of elevation gain. It begins with the Pritchett Peaks hill climb, a section normally closed most of the year and opened for race day. The 50 Mile is listed as 51.5 miles with a 14 hour limit and about +10,612 feet of gain. The marathon is 26.6 miles with an 11 hour limit and about +5,903 feet of gain.
Aid stations are placed around the courses; crew access is available at Start/Finish, Warm Springs, Liberty Glen, and Lone Rock. Drop bags are transported to Start/Finish, Warm Springs, and Lone Rock for applicable distances; there are no drop bags for the marathon. Pacers are allowed for the 100 Mile after mile 50 or after dark; pacers are not allowed for the 50 Mile, the marathon, or relay runners.
Free on-site camping is available near the start/finish area for registered participants on a first come, first served basis. Typical temperatures range near 75°F high and 50°F low and rain and mud are possible. Visit the organization's website for the most recent information.
