Trail Running calendar near Lake Sonoma 2025-2026

The Napa Wilderness Trail Runs, hosted by Bay Trailrunners, takes place at Skyline Wilderness Park and offers a variety of trail running distances, including 40 miles, 50K, 30K, half marathon, and 10K. This event caters to all levels of runners, from seasoned ultra-marathoners to beginners. Particip..

The Sonoma Coast Trail Runs, organized by SkyBreaker Racing, is a scenic running event set in the stunning Sonoma Coast State Park in Northern California. Participants can choose from various distances, including a 50K, Trail Marathon, 30K, and Half Marathon, all featuring breathtaking views of the..

The Wildcat Half Marathon, scheduled for May 31, 2025, in El Sobrante, California, features a scenic trail race with options for a half marathon, 10K, and 5K. Participants can enjoy breathtaking 360-degree views of the Bay Area, including landmarks like San Francisco and the Golden Gate Bridge. The..

The China Camp Trail Run is an exciting running event taking place at China Camp State Park in San Rafael, California, featuring 5K, 10K, and Half Marathon distances. Participants will enjoy scenic views of Mt. Tam, San Pablo Bay, and San Francisco Bay while navigating through twisting single-track..

The SF Half Day is a unique running event taking place in San Francisco, featuring various race durations including 12-hour, 6-hour, and 3-hour options for both solo participants and teams. The course is a scenic one-mile loop around Crissy Field, offering stunning views of the Golden Gate Bridge an..

Dirt Circus - San Francisco is a vibrant community running event scheduled for June 15, 2025. Organized by UltraSignup, this festival celebrates local races and the running community. Participants can enjoy a casual group run, followed by a pancake breakfast and an expo featuring local race director..

The Angel Island Half Marathon is a unique running event held at Ayala Cove in Angel Island State Park, Marin County, California. Participants can choose between a half marathon and a 5-mile race, both offering stunning 360-degree views of the San Francisco Bay. The event combines athleticism with t..

The Bay 2 Bankers 10K is an exciting running event set in San Francisco, featuring a unique mystery theme that celebrates the city's classic vibes. Participants will start near the iconic Ferry Building and navigate through various neighborhoods using a custom map. Teams of 1 to 5 will answer multip..

The Dirty Dozen Run, organized by Brazen Racing, is a unique endurance event taking place at Point Pinole Regional Shoreline. Scheduled for July 12, 2025, participants can choose to run for 12, 6, or 3 hours, either solo or in teams of two or three. The race features a scenic 3.37-mile loop primaril..

The Muir Woods Mountain Challenge, formerly known as Table Rock, is a thrilling trail running event held in Stinson Beach, California. Participants can choose from three distances: 10K, Half Marathon, and 30K, each featuring challenging terrain and stunning views of the Pacific Ocean and surrounding..

The Tamalpa Headlands 50K is a challenging ultramarathon set in the stunning Marin County, California, featuring iconic trails such as Coastal, Miwok, and Dipsea. Scheduled for August 16, 2025, this single-loop race, established in 1998, offers approximately 6,500 feet of elevation gain, combining f..

The Double Dipsea is a challenging 13.7-mile trail run that takes place annually, starting at Stinson Beach, California. First held in 1970, this race is known for its unique handicapped start format, where slower runners begin first, creating a dynamic environment of constant passing on narrow trai..

The Mendocino Running Festival is a vibrant outdoor event held in Mendocino Woodlands Park, California, featuring a variety of races including a half marathon, 10K, and timed formats of 6 and 12 hours. Set against the backdrop of ancient redwoods, participants can enjoy a looped course with stunning..

The Berkeley Trail Adventure is an exciting running event set in Tilden Regional Park, Berkeley, CA, featuring multiple race distances: 50K, 35K, half marathon, and 10K. Participants will enjoy scenic trails lined with coast live oak and eucalyptus, offering stunning views of the bay and surrounding..

The Reservoir Dogs Trail Run, taking place in Orinda, CA, offers a unique opportunity to run on the scenic trails surrounding the Briones Reservoir. Participants can choose from three distances: 10K, Half Marathon, and 35K, all featuring beautiful, rolling terrain and stunning views of the East Bay...

The Women's Headlands Half Marathon, taking place on October 4, 2025, in the scenic Marin Headlands, offers a challenging and beautiful course for runners. Participants can choose between a half marathon (12.6 miles) and a 10K (6 miles), both starting and finishing at Rodeo Beach. The event showcase..

The Ruth Anderson Memorial Endurance Run is a prestigious running event held annually in San Francisco, California, since 1986. This endurance race features multiple distances, including 50 miles, 100 kilometers, and 50 kilometers, attracting runners of various skill levels. The course consists of a..

The California Fall Classic at Lake Sonoma features two challenging ultra-distance races: a 100K and a 55K, set against the stunning backdrop of wine country during the harvest season. This event is recognized as a qualifier for the prestigious Western States 100 Mile Endurance Run. Participants can..

The California Fall Classic at Lake Sonoma features two challenging ultra-distance races: a 100K and a 55K, set against the stunning backdrop of wine country. Scheduled for October 18, 2025, this event is renowned for its scenic single-track trails and vibrant community atmosphere, complete with loc..

The California Fall Classic at Lake Sonoma features two challenging ultra-distance races: a 100K and a 55K, set against the stunning backdrop of wine country. Scheduled for October 18, 2025, this event is ideal for runners seeking a late-season challenge or a chance to qualify for the Western States..