Lake Sonoma 50 Half Marathon

Saturday, April 12, 2025 Healdsburg, CA

Lake Sonoma 50 Half Marathon in Healdsburg, CA

Nestled in the serene landscapes of Healdsburg, California, the Lake Sonoma 50 Mile, Marathon, and Trail Sisters Half Marathon beckon all trail running enthusiasts for an unforgettable experience on April 12, 2025.

With three distinct race events, there’s something for everyone, and it’s more than just a race – it’s a celebration of the vibrant trail running community. The courses will challenge your limits while offering breathtaking views of the area’s picturesque landscapes.

The Classic 50 Mile and Trail Sisters (TS) women’s half marathon courses follow an out and back format. For those embarking on the marathon journey, the route is a complete loop around Lake Sonoma, including a memorable crossing of the iconic lake bridge. What unites these courses are the relentless rolling hills that embrace the stunning Lake Sonoma. These hills offer the perfect blend of challenge and encouragement, making it an ideal venue for seasoned speedsters testing their limits and first-timers seeking a trail running adventure.

The unique aspect of these out and back courses is the camaraderie they foster. Runners can connect with one another, sharing high-fives and well wishes as they tackle the course’s undulating terrain. It’s a trail running experience that goes beyond the personal challenge, emphasizing the communal spirit of the sport.

The festivities extend beyond the race itself. The start and finish lines for all three events are located at the Lake Sonoma Visitor Center green space. This location creates a festival-like atmosphere, offering an ideal setting for celebration and community building. The air will be filled with camaraderie and encouragement as participants and supporters come together to revel in the spirit of trail running.

But it’s not just about the race – it’s about the celebration. The event hosts a full schedule of pre and post-race activities, including athlete panels, community dinners, social gatherings, and, of course, wine tastings. After all, you can’t visit Lake Sonoma without experiencing the local wineries. These moments of celebration and togetherness are the heart of the Lake Sonoma experience.

In the true spirit of the trail running community, cash awards await the top three male and female athletes in the 50 mile event. It’s an opportunity to recognize the dedication and skill of these exceptional runners and celebrate their achievements.

So, whether you’re a seasoned trail racer looking to push your limits or a first-timer seeking an encouraging challenge, the Lake Sonoma 50 Mile, Marathon, and Trail Sisters Half Marathon are the ideal events. Beyond the race, it’s an opportunity to connect with fellow runners, savor the stunning landscapes of Lake Sonoma, and become part of a passionate and supportive trail running community. We invite you to join us on April 12, 2025, to celebrate the joy of trail running at Lake Sonoma – it’s an experience that extends far beyond the finish line.

Race Weather & Climate

Healdsburg, California, is a charming town located in Sonoma County, approximately 70 miles north of San Francisco. Nestled in the heart of California’s wine country, Healdsburg offers residents and visitors access to world-class vineyards and a welcoming, small-town atmosphere. Its prime location in Sonoma County, not far from San Francisco, makes it an attractive destination for those looking to experience the region’s renowned wine culture while still being within a reasonable drive of the Bay Area.

On April 12th in Healdsburg, CA, you can expect an average high temperature of around 70°F and an average low temperature of about 45°F. This date falls in mid-spring, characterized by milder and warming weather. Rainfall during this time is typically minimal, with averages around 0.1-0.3 inches.

Lake Sonoma 50 Half Marathon Race Results

Lake Sonoma 50 Half Marathon Race Results

Lake Sonoma 50 Half Marathon Course Map

See the race route map for the Lake Sonoma 50 Half Marathon course map here.

Starting Time

The half marathon start time is 9:00 AM.

The time limit for the half marathon is 4.5 hours.


To reserve your spot in the 2025 Lake Sonoma 50 Half Marathon, you can use the registration link here.

Race Fees

  • There is a $105.00 fee for the Trail Sisters Women’s Half Marathon.
  • There is a $150.00 fee for the Lake Sonoma Marathon.
  • There is a $250.00 fee for the Lake Sonoma 50 Mile.

Lake Sonoma 50 Half Marathon Race Website

Lake Sonoma 50 Half Marathon Website

See more races in: April, California