Saturday, Oct 21, 2023
Registration closes: Sat, Oct 14 @ 11:59PM

Lake Sonoma 100K/55k will be run Saturday October 21, 2023 at 5 am and is a WS100 2024 qualifier!
Course map link: Open New Tab

Register in groups:
1. The first person goes through regular registration – at checkout click "Add Participant"
2. This takes you back to the main page where the next person can be added by clicking the green "Register" button.
3. Each runner needs to be added (for the waiver, t-shirt size etc...), but they can all be billed on one card.

About Lake Sonoma Race Series
Come experience one of the most RELENTLESS and beautiful ultras on the West Coast, with two courses that navigate miles upon miles of single track with majestic views of Lake Sonoma, nestled in the beauty of wine country during harvest season. The new fall date will make the LS100 perfect for runners who are looking for a late season challenge, prefer cooler weather, or want to have one last chance to snag a qualifier for the Western States Endurance Run.

The course, while relentless, will have generous cutoffs and aid stations to allow participants to complete the race. For the past 2 editions the cutoff time for Western States qualification has been 18 hours. We are moving forward with this cutoff for Western States, but runners who simply wish to finish will have a full 20 hours. For the safety of the runners there will be a cutoff enforced at approximately mile 50 of 9:00PM. There will be a total of 7 full aid stations and 4 water stations for the 100k meaning that runners will not have to go more than 8 miles between aid at any time. The 55k will have the same time as the 100k to complete their course. The 55k will have a total of 5 full aid stations and 1 water station

The Lake Sonoma Race Series is legendary for its wine country hospitality, and the new race weekend will be no exception. The LS 100K & 55K weekend will be a lively scene for athletes, complete with on-site camping, live music and of course the best local food, wine and beer Sonoma County has to offer! As always, the Lake Sonoma Race Series is a community event, with proceeds from all races supporting the Children of Vineyard Workers Scholarship Fund. breweries, and celebrated wine from Wilson Artisan Wineries. Participants as well as their families and friends will enjoy Lake Sonoma and Healdsburg’s small-town charm

Local time: 10:24 AM


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