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Lake Sonoma 50

Saturday April 8th, 2023
Healdsburg, CA
Distance: 50 k · Ultra
Offical Race Web Site

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.

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Lake Sonoma 50

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Lake Sonoma 50, Race Date: 2022-04-09, Distance: Ultra
Division Time Name Age Home
Male 7:07:14 Matthew Seidel 25 Emeryville, CA
2nd Male 7:13:26 Ben Koss 41 San Francisco, CA
3rd Male 7:20:59 Grant Hotaling 38 Healdsburg, CA
4th Male 7:33:30 Patrick Wachter 24 USA
Female 7:27:14 Brittany Charboneau 33 Denver. CO
2nd Female 7:37:59 Caitriona Jennings 41 Letterkenny, IRL
3rd Female 8:12:57 Svenja Espenhahn 35 Exshaw
4th Female 8:42:14 Becca Bramley Centennial
Division Time Name Age Home
M 40-49 7:13:26 Ben Koss 41 San Francisco
M 50-59 9:11:00 Daniel Barger 56 USA
M 60-69 10:00:42 Ronald Hess 60 USA
F 40-49 7:37:59 Caitriona Jennings 41 Letterkenny, IRL
F 50-59 9:58:12 Verity Breen 55 USA
F 60-69 10:49:11 Anne Johnson 60 Auburn, CA
Lake Sonoma 50

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. The trail is relentlessly rolling with three significant climbs.

There is about 10,500 feet of elevation gain and an equal amount of loss over the 50 miles. Trail quality is generally good;there are very few rocks and almost no roots. However, much of the trail is seldom used and so you can expect a lot of leaves and sticks on the trail.

There are twelve creek crossings and it is likely that your feet will get wet in most – if not all – of them.


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