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50 Mile | Marathon | Women's Half-Marathon

LS50 is the U.S. Team qualifier event for the 2023 World Mountain & Trail Running Championships.

April 7th & 8th, 2023

Lake Sonoma, California

LS50 has secured more entry spots!
Open registration will be begin at 9:00am PST on Dec. 5th.
Registration will remain open until all additional spots are filled.

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Women's Half Marathon

Friday, April 7th - 9:00am

50 Mile

Saturday, April 8th - 6:30am

LS50 has secured more entry spots!
Open registration will be begin at 9:00am PST on Dec. 5th.
Registration will remain open until all additional spots are filled.

Marathon

Saturday, April 8th - 8:00am

Welcome!

Join us in Healdsburg, California, April 7th and 8th 2023 for the Classic Lake Sonoma 50 Mile, Marathon, and NEW Trail Sisters Half Marathon!

The Classic 50 Mile and NEW Trail Sisters (TS) women’s half marathon courses are an out and back style, whereas the marathon course will make a complete loop around Lake Sonoma, crossing the iconic lake bridge. All of the courses boast of “relentless” rolling hills surrounding beautiful Lake Sonoma. Additionally, the out and back courses present an ability to connect with other runners, providing opportunity for high-fives and well wishes.

When it comes to performance, these are perfect events for speedsters looking to test their fitness, and for the first timers who are looking for a challenging, yet encouraging course. New for 2023, we will be providing cash awards for the top three male and female athletes in the 50 mile event!

In true trail community fashion, all three race events will now start and finish at the Lake Sonoma Visitor Center green space. This festival-like atmosphere is designed for celebration and for fostering community. Oh, and did we mention the opportunity to camp… (details to come!)

Speaking of celebrating, we will have a full schedule of pre and post-race events, including athlete panels, community dinner, socials, and of course wine tastings. You can’t come to Lake Sonoma and not visit a winery!

We hope you will join us for the 50 Mile, Marathon, and TS Half Marathon, April 7th and 8th. We look forward to celebrating with you at that finish line!

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