Event Description

The race is held on the rugged trails at Lake Sonoma, about 10 miles northwest of Healdsburg. The course is 86% single track and 9% dirt roads, with the first 2.4 miles on a paved country road. The race starts at 6:30 a.m. and has a 14-hour time limit.

Upcoming Races

Apr 13th, 2019 50 Miles

The course is an out-and-back circumnavigation of the Warm Springs Arm of Lake Sonoma. It is 86% single-track trail and 9% dirt fire roads, with the first 2.4 miles on pavement.

Course Type: Out and Back

Aid Stations: 9

Elevation: 10,500 10,500 ft.

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Past Races

Date Distance Total Finishers
04/14/18 50 Miles 292
04/15/17 50 Miles 300
04/09/16 50 Miles 304
04/11/15 50 Miles 278
04/12/14 50 Miles 301
04/13/13 50 Miles 266
04/14/12 50 Miles 226
04/02/11 50 Miles Race Cancelled
03/27/10 50 Miles 144
03/28/09 50 Miles 111
04/12/08 50 Miles 75

Recent Results