Lake Sonoma 50 Mile, Marathon & Trail Sisters Half Marathon Geyserville, CA   Apr 12, 2025

Join in Healdsburg, California this April for the the Lake Sonoma 50 Mile, Marathon, and Trail Sisters Half Marathon!

The Classic 50 Mile is an out and back style, whereas the marathon course will make a complete loop around Lake Sonoma, crossing the iconic lake bridge. New for 2025 the Trail Sisters Half Marathon will move to 10am Saturday and start at Lone Rock and finish at the Visitors Center. All of the courses boast of “relentless” rolling hills surrounding beautiful Lake Sonoma. 

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. We will be providing cash awards for the top three male and female athletes in the 50 mile & Marathon events!

In true trail community fashion, all three race events finish at the Lake Sonoma Visitor Center green space. This festival-like atmosphere is designed for celebration and for fostering community.

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!