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 11 2020
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.
10,500 10,500 ft.
Out and Back Course
9 Aid Stations
4 Elevation Rating
Very hilly, ~7500-12,500 feet in 50 miles
2 Surface Rating
Mostly groomed trail or dirt roads

Results

50 Miles View course top times

Date Finishers Top Result Top Result (F)
04/13/19 280 6:08:31 7:25:15
04/14/18 292 5:51:16 7:13:55
04/15/17 300 6:17:55 7:22:34
04/09/16 304 6:00:52 7:14:45
04/11/15 278 6:09:39 7:08:23
04/12/14 301 6:11:10 7:26:15
04/13/13 266 6:14:55 7:47:42
04/14/12 226 6:17:27 7:52:44
04/02/11 Race Cancelled
03/27/10 144 7:08:20 8:26:53
03/28/09 111 7:30:58 8:43:30
04/12/08 75 8:24:31 9:44:13
We try to keep the most accurate information about this race, but changes do happen. Always visit the official race website for the most up to date information.
Frozen Gnome
  • Jan 11, 2020
  • Crystal Lake, IL
50 KM