Lake Sonoma 50
From Wikipedia, the free encyclopedia
Lake Sonoma 50 is a 50-mile ultramarathon 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 ultramarathons in the United States.[2][3]
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 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]
- No littering
- Be nice
- 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.
