Trail Running calendar near Duncans Mills 2025-2026

The Sonoma Coast Trail Runs, presented by SkyBreaker Racing, take place in Sonoma Coast State Park near Duncans Mills, California. The event offers four distances: 50K, Trail Marathon, 30K, and Half Marathon, featuring challenging elevation gains from 2,800 to 7,000 feet. Runners traverse scenic tra..

The Wildcat Half Marathon, held in El Sobrante, California, is a trail running event organized by Brazen Racing. It features a half marathon, 10K, and 5K distances, welcoming runners, hikers, and walkers alike. The race takes place in Wildcat Canyon Regional Park, offering spectacular 360-degree vie..

The 2025 Lake Chabot Trail Challenge features a Half Marathon and a 5K run, taking place in Castro Valley, California. This annual event, now in its 41st year, is popular among trail runners and offers scenic views of Lake Chabot, Mt. Diablo, and the San Francisco Bay.The Half Marathon course is a h..

The Cinderella Trail Run is an exciting running event taking place in Oakland, California, featuring a variety of race distances including a Half Marathon, Marathon, 8K, 30K, 50K, and a free Kid's Run for children aged 6 and under. Set in the scenic Joaquin Miller and Redwood Regional parks, partici..

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, held at China Camp State Park in San Rafael, California, offers 5K, 10K, and half marathon distances. Set in a historic area once home to a Chinese shrimp-fishing village, the race features scenic single-track trails with views of Mt. Tamalpais, San Pablo Bay, and San Franc..

Dirt Circus - San Francisco is a free community running event held in San Francisco, California, celebrating local trail running culture. Organized by UltraSignup, this one-day festival features a social group run with options of 3.2 or 4.5 miles, welcoming all paces and encouraging participants to..

The Angel Island Half Marathon, hosted by Urban Coyote Racing, takes place at Ayala Cove in Angel Island State Park, Marin County, California. This unique event offers both a half marathon and a 5-mile race, with participants enjoying stunning 360-degree views of the San Francisco Bay. The course fe..

The Woodmonster Trail Race is a challenging 10-mile trail run held in Oakland, California, starting and finishing at the Chabot Space & Science Center. The course features a mix of hills and single-track trails, including the notorious Woodmonster climb, known for its steep and demanding ascent. Run..

The Rock the Loch Half Marathon is a running event taking place from June 27 to June 30, 2025, at Lake Chabot Regional Park in Castro Valley, CA. Participants can choose to run in person or virtually, with options for a half marathon, 10K, and 5K distances. The event promises a scenic trail run, com..

The Bay 2 Bankers 10K is a unique running event held in San Francisco, starting near the iconic Ferry Building. Now in its 13th year, the race features a mystery theme celebrating the classic vibes of the city. Participants run through various historic neighborhoods, navigating from checkpoint to ch..

The Dirty Dozen Run is an annual trail running event hosted by Brazen Racing at Point Pinole Regional Shoreline in Richmond, California. Scheduled for July 12, 2025, it features 12-hour, 6-hour, and 3-hour endurance races on a scenic 3.37-mile loop composed mostly of dirt fire trails. The course off..

The Muir Woods Trail Run, held at Mt. Tamalpais State Park near Stinson Beach, California, offers three distances: 10K, half marathon, and 30K. This challenging trail race features steep climbs, including a 2,000-foot ascent over two miles on Willow Camp Hill, scenic ridge-line views of Stinson Beac..

The Rodeo Valley Trail Run, held in the scenic Marin Headlands near Sausalito, CA, offers trail races of 8K, Half Marathon, 30K, and 50K distances. Starting near historic Fort Cronkhite and Rodeo Beach, the course features challenging steep climbs and descents along coastal trails with stunning view..

The Skyline 50K Endurance Run, held annually in August at Lake Chabot Marina in Castro Valley, California, is one of the oldest continuously running 50K races in the U.S. The course features a large loop through the scenic East Bay Regional Parks, reaching Skyline Gate. Known for its welcoming atmos..

Bear Creek is a trail running event held in Lafayette, California, featuring a half marathon, 10K, and 5K distances. The courses are known for their challenging hills rather than being flat or fast, offering runners and hikers a scenic experience through Briones Regional Park. Participants receive c..

The Redwood (Summer) Trail Run is an exciting running event taking place in Oakland, California, featuring a variety of race distances including a 5-mile run, Half Marathon, 30K, Marathon, and 50K, along with a free Kid's Run for children aged 6 and under. The course winds through the scenic Redwood..

The Tamalpa Headlands 50K is a challenging ultramarathon held annually in Marin County, California, starting and finishing at Santos Meadow near Muir Woods. Covering a 50-kilometer single-loop course, the race features approximately 6,500 feet of elevation gain across iconic trails such as Coastal,..

The Envirosports Angel Island Half Marathon & 10K is an annual race held at Angel Island State Park near Tiburon, California. The event features a scenic, hilly loop trail that circumnavigates Angel Island, offering stunning panoramic views of the Golden Gate Bridge, San Francisco, Alcatraz Island,..

The Double Dipsea is a challenging 13.7-mile trail race held annually at Stinson Beach, California, celebrating its 55th edition in 2025. The course follows the legendary Dipsea Trail from Stinson Beach to Mill Valley and back, featuring steep hills, numerous stairs, and stunning scenic views. Known..