Trail Running calendar near Lake Sonoma 2025-2026

The Mt. Tam Wild Boar Half Marathon and 10K is an annual running event held at Mt. Tamalpais State Park in Mill Valley, California.Celebrating its 37th year in 2025, the race features scenic coastal ridge trails with stunning views of the Pacific Ocean and surrounding landscapes. Participants can ch..

The 2025 Animal Run features a 10k race, along with a 5k, Canicross, and a 2-mile walk, all taking place at 900 Dornan Drive, Richmond, CA. This event serves as a fundraiser for Rancho Compasión, promoting a community of athletes dedicated to animal kindness and environmental awareness. Participants..

The Miwok 100K is a renowned trail ultramarathon celebrated for its stunning scenery, featuring views of San Francisco, the Golden Gate Bridge, and the majestic redwoods. The course, which includes 11,800 feet of elevation gain, combines single-track trails and dirt roads, making it both challenging..

The Angwin to Angwish Trail Run, set in the scenic Napa Valley, features a variety of challenging courses for runners of all ages. Scheduled for May 4, 2025, participants can choose from three distances: a 1 Mile Kids Run, a 10K, and a 26K. This cupless event encourages sustainability by requiring r..

The Grizzly Peak Trail Run is an exciting running event taking place at Lake Anza in Tilden Regional Park, Berkeley, CA. Scheduled for May 10, 2025, it features multiple race distances including a 10K, Half Marathon, 30K, Marathon, and 50K, along with a free Kid's Run for children aged 6 and under...

Nitro Trail 2025 is an exciting running event taking place at Point Pinole Regional Shoreline Park in San Pablo, California. Participants can choose from three race distances: a half marathon, 10K, and 5K, making it suitable for runners of all levels. The event celebrates the park's transformation f..

The Waves & Whales 5K Trail Run is an annual event held in Point Arena, California, showcasing the stunning Mendocino Coast. Participants run through the scenic Point Arena-Stornetta Unit of the California Coastal National Monument, starting in a conifer forest and winding along coastal bluffs. Proc..

The Muir Woods Marathon is a challenging trail running event held in Stinson Beach, California, part of the Enviro Sports series. Participants can choose from a marathon, half marathon, or a 7-mile race, all set amidst the scenic and rugged trails of Muir Woods. The course features steep climbs, nat..

The Napa Wilderness Trail Runs is a trail running event held at Skyline Wilderness Park in Napa, California. It offers a variety of race distances, including 10K, half marathon, 30K, 50K, and a 40-mile ultra marathon, catering to runners of all levels. The courses feature scenic views of Napa Valley..

The Sonoma Coast Trail Runs, organized by SkyBreaker Racing, is an exciting running event set in the stunning landscapes of Sonoma Coast State Park, California. Participants can choose from various race distances, including a 50K, Trail Marathon, 30K, and Half Marathon. The courses feature beautiful..

The Wildcat Half Marathon, organized by Brazen Racing, is set to take place on May 31, 2025, in El Sobrante, California. This event features a Half Marathon, 10K, and 5K, all set within the scenic Wildcat Canyon Regional Park, offering breathtaking views of the Bay Area. The race is designed for all..

The SF Half Day is a unique running event taking place in San Francisco, featuring various race formats including 3-hour, 6-hour, and 12-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 and..

The China Camp Trail Run is a scenic race held in China Camp State Park near San Rafael, California, featuring 5K, 10K, and half marathon distances. Participants traverse diverse, technical dirt trails with views of Mt. Tam, San Pablo Bay, and San Francisco Bay, passing through forests and open terr..

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, with options for different paces, followed by a pancake breakfast and an..

The Angel Island Half Marathon is a unique running event set in the picturesque Angel Island State Park, offering stunning 360-degree views of the San Francisco Bay. Participants can choose between a half marathon and a 5-mile race, both of which include a ferry ride from Tiburon. The event combines..

The Bay 2 Bankers 10K and 5K in San Francisco is an annual race celebrating the city's vibrant neighborhoods and classic vibes. Participants navigate a course starting near the Ferry Building, using a custom map to find checkpoints and answer multiple-choice questions. The event fosters community en..

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 Trail Run, part of the Inside Trail Racing series, offers 10K, half marathon, and 30K trail races set in Stinson Beach, California, within Mt. Tamalpais State Park. The event features challenging courses on technical dirt trails, fire roads, and scenic single-track, with significant e..

The Rodeo Valley Trail Run is a scenic trail race held in the Marin Headlands near Sausalito, California, within the Golden Gate National Recreation Area. The event offers four race distances: 8K, half marathon, 30K, and 50K, featuring challenging steep pitches, lofty downhill sections, and stunning..

The Tamalpa Headlands 50K is a challenging ultramarathon set in the stunning Marin County, California, featuring iconic trails such as Coastal, Miwok, and Dipsea. Established in 1998 and presented by the Tamalpa Runners, this single-loop race offers approximately 6,500 feet of elevation gain, combin..