Available distances
Races on the programme
| Race | Distance | Elevation gain | Finishers (last edition) |
|---|---|---|---|
| Lake Sonoma 50 | 50.3 mi | 10,007 ft | 200 |
| 42 K | 26.1 mi | — | — |
| 21 K | 13 mi | — | — |
About
The Lake Sonoma 50 Mile takes place in Healdsburg, California, in early April, on natural trails by the lake. Three trail formats are offered: the 50-mile race, which covers about 50.3 miles with roughly 10,000 feet of climbing, a 42K (26.1 miles) and a 21K (13 miles). Courses like this are normally won by patient pacing rather than a fast start, so runners tackling the longest distance should plan on steady fueling, hydration and a realistic goal for the climbs. The shorter races give newcomers a way to experience the same kind of terrain in a single morning without committing to an ultra.
Highlights
- Lakes and ponds
- Off-road
Prepare for Lake Sonoma 50 Mile with RunRun
An AI-generated training plan, adjusted every week based on your real sessions. Built around your goal, current level and race date.
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Races nearby
Other upcoming races around Healdsburg.
La Crema Cal Tri Sonoma
Jun 27, 2027 · Guerneville, CA · 11 mi away
13.8 mi + 3.1 mi
Lake Sonoma 100K, 50K & Trail Sisters Half
Apr 10, 2027 · Geyserville, CA · 11 mi away
62.1 mi · 31.1 mi · 13.1 mi
Annadel Half Marathon
Apr 17, 2027 · Santa Rosa, CA · 14 mi away
3.1 mi · 6.2 mi · 13.1 mi
IPA10K Brewfest & Beer Mile
Oct 31, 2026 · Sebastopol, CA · 14 mi away
13.1 mi · 6.2 mi · 1.9 mi
Santa Rosa Marathon
Aug 21, 2027 · Santa Rosa, CA · 15 mi away
26.2 mi · 13.1 mi · 6.2 mi · 3.1 mi
Sonoma Coast Trail Runs
May 29, 2027 · Duncans Mills, CA · 15 mi away
13.1 mi · 18.6 mi · 26.2 mi · 31.1 mi