Trail Running calendar near San Leandro 2025-2026

The Golden Gate Trail Classic will take place in San Francisco from Saturday 22 November 2025 to Sunday 23 November 2025. You can run between 15 and 50 miles.

The Zoom Turkey Trot is a Thanksgiving Day running event held at Hellyer County Park in San Jose, California. It offers multiple race distances including 5K, 10K, and a USATF-certified half marathon, with additional age-specific categories and a free 50-yard dash for kids six and under. The courses..

Quad Dipsea is an ultramarathon held in Mill Valley, California, starting at Old Mill Park. The event features four grueling laps along the Dipsea Trail to Stinson Beach and back, totaling roughly 28 miles with about 9,000 feet of elevation gain. Runners confront famous climbs and rugged terrain, in..

Quarry Turkey, held at Quarry Lakes Regional Recreation Area in Fremont, California, is Brazen Racing’s Thanksgiving weekend event featuring a fast, mostly-flat half marathon, 10K, and 5K through scenic Quarry Lakes trails. It welcomes walkers and families for a festive, turkey-themed atmosphere, wi..

The Krampus Cross Country is a festive running event held in San Francisco, California, featuring live and virtual options. Participants can choose from three distances: a 5K, 10K, or the challenging Naughty Nine Miler. The live races start at the Ecology Trail Head at the end of Barnard Avenue, wit..

The Calero Trail Run - Winter is a versatile trail running event held at Calero County Park in San Jose, California. It offers a range of distances including a 50K, trail marathon, 25K, half marathon, 15K, 10K, 5K, mile, and a kids run, catering to all levels of runners. The course features scenic s..

Peacock Gap Trail Run, part of Inside Trail Racing, takes place at China Camp State Park in San Rafael, CA. The event offers three distances: 10K, Half Marathon, and 30K. Runners traverse twisting single-track through forested sections and open trails along the San Pablo Bay side, with sweeping view..

ZombieRunner Quarry Lakes is a multi-distance running festival held at Quarry Lakes Regional Recreation Area (Ensenada Pavilion) in Fremont, CA. The lineup includes 5K, 10K, Half Marathon, 30K, Marathon, plus youth and Kids Run events. The course starts in the scenic Quarry Lakes area and follows th..

Hunter S. Thompson Fear & Loathing in San Francisco is an urban ultramarathon offering 50K or 50 miles. Located in San Francisco, the single-loop course starts and finishes atop Twin Peaks, with the city spread out beneath.The 50K route is about 99% city streets; the 50-mile option includes some tra..

2025 Hark the Herald Half Marathon & 10K, the 37th annual edition, takes place at Angel Island State Park, Belvedere Tiburon, California. The Half Marathon is two loops on a hilly trail; the 10K is a single loop. The event is limited to 400 participants, creating an intimate atmosphere with panorami..

Summit Rock is Brazen Racing’s trail event held in the redwood and pine forests of Sanborn County Park, just outside Silicon Valley in Saratoga, California. Runners can choose from a 5K, 10K, or half-marathon, all on miles of single-track trails through the Santa Cruz Mountains. The course features..

Woodside Ramble is a forested trail race series held in Huddart and Wunderlich Parks on California’s San Francisco Peninsula (Woodside). The event offers four distances: 10K (6.2 miles), Half Marathon (13.2 miles), 35K (23.1 miles), and 50K (31.2 miles), with elevation gains from about 1,100 to 5,40..

Brazen Racing’s Almost New Year’s Eve is a trail-running event at Lake Chabot in Castro Valley, California. Runners may choose from a Half Marathon, 10K, or 5K, with hikers and walkers welcome. The race navigates Lake Chabot’s scenic trails, delivering a festive, outdoor atmosphere as participants c..

Brazen New Year's Day 2026 takes place at Lake Chabot in Castro Valley, California. Runners can choose from a half marathon, 10K, or 5K on Lake Chabot’s scenic trails. The course loops around the lake and is described as scenic and invigorating, offering a family-friendly atmosphere as participants..

The Hacienda Hills Trail Run - Winter is a trail running event held at Almaden Quicksilver County Park near San Jose, California. It offers nine race distances ranging from a Kids Run and 1 Mile to challenging 50K and Marathon options, all featuring increasing elevation gain through scenic Northern..

Crystal Springs Trail Run is a multi-distance trail race in Woodside, California, weaving through Huddart Park, King’s Mountain, and Bear Gulch. The event offers 8K, Half Marathon, 35K, Marathon, 50K, and a free Kids’ Run. Runners traverse towering redwoods, lush ferns, and varied terrain, with cour..

Pacifica Foothills Trail Run, organized by Inside Trail Racing, is staged at San Pedro Valley Park in Pacifica, California. It offers three dirt-trail distances—the 10K, Half Marathon, and 30K—on Mt. Montara foothills with sweeping Pacifica coastline views.The course is mostly technical single-track..

Brazen Racing's Coyote Hills event takes place at Coyote Hills Regional Park in Fremont, California, offering three distances: 5K, 10K, and a Half Marathon, with walkers welcome. The course blends dirt and paved trails with wooden boardwalks through marshland, delivering bay views and varied scenery..

Mt. Umunhum Trail Conquest-Winter is an endurance trail running event in San Jose, California, starting at the Hacienda Entrance of Almaden Quicksilver County Park. Runners can choose 5K, 7 Mile, half marathon, 30K, trail marathon, 50K, and a Kids Run.The 30K climbs Bald Mountain, while the Trail Ma..

Fort Ord Trail Run takes place at Fort Ord National Monument in Monterey, California. The event offers three distances: 10K, 25K, and 50K, run mainly on non-technical dirt trails and fire roads, with most climbing toward the end. Elevation gains are approximately 900 ft for 10K, 2,250 ft for 25K, an..