31 miles of wine country singletrack capped by the iconic Lake Sonoma bridge crossing
Other trail races within 109 miles
The Lake Sonoma 50k delivers a concentrated taste of wine country singletrack, rolling from the Visitor Center through South Lake, Island View, Warm Springs Creek, Wulfow, Liberty Glen, and the Bummer aid stations before crossing the iconic Lake Sonoma bridge. New to the 2026 spring lineup, this 31-mile course packs 5,700 feet of cumulative gain across relentless rolling hills and shaded madrone groves, finishing with a fast descent to the festival finish line. Four full aid stations stock Skratch nutrition, with drop bag access at Warm Springs and crew support at Liberty Glen.
Some ultra experience recommended
Geyserville, CA, United StatesApril 10, 2027
Lake Sonoma 50K is a loop trail race in Geyserville, CA, United States, held on April 10, 2027. The course covers 31.1 miles, climbs 5,700 ft, and has an 11h cutoff.
| Location | Mile | Elevation | Cutoff | Crew | Drop bags |
|---|---|---|---|---|---|
Start Start | 0.0 | 230 ft | — | ||
South Lake Aid Station | 2.4 | 807 ft | — | ||
Island View Aid Station | 7.0 | 515 ft | — | ||
Warm Springs Aid Station | 13.9 | 499 ft | 5h12:30 PM | Drop Bags | |
Wulfow Aid Station | 19.3 | 787 ft | — | ||
Liberty Glen Aid Station | 22.0 | 1,093 ft | 7h45m3:15 PM | Crew | Drop Bags |
Bummer Aid Station | 27.8 | 1,089 ft | — | ||
Finish Finish | 31.1 | 226 ft | 11h6:30 PM |
Aid station details for this race are still being filled in. Cutoffs and access rules come from the race’s own published information and can change — check the official race details before planning around them.
Sign in for race-day weather at every station, points of interest, segment-by-segment analysis, pacing, and to save this race to your calendar.
Vehicle and tent camping permitted Friday and Saturday nights right next to the start/finish at the Lake Sonoma Visitor Center. No reservation required. Cars and Sprinter-style vans only in the lot — no trailers, tow-behinds, or pop-outs. Tent camping in designated areas only. Quiet hours 9pm–4am.
No required gear specified
No recommended gear specified
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