Lake Sonoma 50 is a 50-mile ultra marathon race held near Healdsburg, California. The course circumnavigates the Warm Springs arm of Lake Sonoma on hiking trails. It takes place annually on the second Saturday in April.[1] The race was first run in 2008. In recent years it has become one of the most highly competitive ultra marathons in the United States.[2][3]

Registration

Registration is limited to only 400 runners. As a result, entry into the race is determined by lottery.[4]

Race and elevation profile

The Lake Sonoma 50 has a 14 hour time limit, with the gun-time being 6:30am on the day of the race.[1]

According to the official course website, 86% of the course is single track, 9% dirt roads, and the first 2.4 miles on a paved road.[5] There are twelve creek crossings and around 10,500 ft of elevation gain throughout the race.[1]

Aid stations

Aid stations and characteristics
Aid station name Mile Next aid station (miles) Cut off time Crew Access Drop Bags
Island View 4.3 7.3 No No
Warm Springs Creek 11.6 5.3 Yes Yes
Wulfow 16.9 1.9 No No
Madrone Point 18.8 6.4 Yes No
No Name Flat 25.2 5.7 1:15 PM Yes Yes
Madrone Point 30.9 1.9 Yes No
Wulfow 32.8 5.3 No No
Warm Springs Creek 38.0 7.5 4:45 PM Yes Yes
Island View (full) 45.5 4.8 7:10 PM No No
Finish 50.29 8:30 PM Yes Yes

Stocked with normal ultra aid station fare including GU energy gels and products.[5] The race directors ask that participants limit their drop bag to the size of a small shoe box.[5]

Race rules

Rules:[6]

  1. No littering
  2. Be nice
  3. Have Fun!

If a participant violates the no littering rule or is observed being rude or unsportsmanlike they will be disqualified from the race.

Furthermore, there is a zero tolerance policy regarding the use of performance-enhancing drugs.

No pacers are allowed during the duration of the race.

Western States Endurance Run Golden Ticket race

The first two men and women finishers of the Lake Sonoma 50 mile race are rewarded a guaranteed entry into the Western States Endurance run.[7] Because of this it is considered highly competitive in the ultra running community.

Results

Key:   Current course record

Edition Year Male winner Country Time (h:m:s) Female winner Country Time (h:m:s)
13 2022 Matthew Seidel  United States 7:07:14 Brittany Charboneau  United States 7:27:14
12 2021 Mario Mendoza  United States 7:10:13 Keely Henninger  United States 7:40:20
- 2020 race cancelled due to pandemic
11 2019 Jared Hazen  United States 6:08:29 Anna Mae Flynn  United States 7:13:55
10 2018 Jim Walmsley  United States 5:51:16 Keely Henninger  United States 7:13:55
9 2017 Sage Canaday  United States 6:17:55 YiOu Wang  United States 7:22:34
8 2016 Jim Walmsley  United States 6:00:52 YiOu Wang  United States 7:14:45
7 2015 Alex Varner  United States 6:09:39 Stephanie Howe Violett  United States 7:08:23
6 2014 Zach Miller  United States 6:11:10 Emily Harrison  United States 7:26:15
5 2013 Sage Canaday  United States 6:14:55 Cassie Scallon  United States 7:47:42
4 2012 Dakota Jones  United States 6:17:27 Joelle Vaught  United States 7:52:44
- 2011 race cancelled due to bad weather conditions
3 2010 Hal Koerner  United States 7:08:20 Devon Crosby-Helms  United States 8:26:53
2 2009 Jonathan Olsen  United States 7:30:58 Suzanna Bon  United States 8:43:30
1 2008 Dan Barger  United States 8:24:31 Clare Abram  United States 9:44:13

References

  1. 1 2 3 "Lake Sonoma 50". lakesonoma50.com. Retrieved 25 February 2015.
  2. ↑ "2013 Most Competitive Fields". UltraRunning magazine. 33 (8): 35. January 2014.
  3. ↑ "2014 Most Competitive Fields". ultrarunning.com. Retrieved 25 February 2015.
  4. ↑ "Lake Sonoma - April 13, 2019". ultrasignup.com. Retrieved 2018-11-27.
  5. 1 2 3 "Course & Aid". Lake Sonoma 50. Retrieved 18 May 2020.
  6. ↑ "Rules". lakesonoma50.com. Lake Sonoma 50. Retrieved 18 May 2020.
  7. ↑ "Altra Golden Ticket Races – Western States Endurance Run". wser.org. Retrieved 2018-11-12.
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