Trail Running calendar near Santa Venetia 2025-2026

Coyote Hills Run, hosted by Brazen Racing, takes place at Coyote Hills Regional Park in Fremont, California. The event offers three distances: a half marathon, 10K, and 5K, with walkers welcome. The course features a mix of surfaces—from dirt and paved trails to wooden boardwalks through marshes—alo..

The Mt. Umunhum Trail Conquest - Winter is a trail running event held at Almaden Quicksilver County Park in San Jose, California. The race offers multiple distances including a 50K, trail marathon, 30K, half marathon, 7-mile, 5K, mile, and a kids run.The longer courses traverse the scenic Sierra Azu..

Bay Breeze is a Bay Area race held at San Leandro Marina Park in San Leandro, California, offering a Half Marathon, 10K, and 5K. The course features a mostly-flat, bayside route that hugs the shoreline, delivering scenic views of the water and the San Francisco Bay area—described as a romantic setti..

Redtail Ridge is a trail running event held at Lake Chabot Regional Park in Castro Valley, California. The race offers multiple distances including 5K, 10K, half marathon, 30K, and 50K, catering to a wide range of runners from beginners to those seeking personal records. The course features eucalypt..

The Marin Ultra Challenge is a premier long-distance trail race held in Marin County, California, featuring 50-mile and 50K distances. The course offers about 11,000 feet of elevation gain for the 50-mile race, traversing scenic trails through the Marin Headlands, Mt. Tamalpais, and Muir Woods.Runne..

The Napa Valley Trail Marathon, Half Marathon, and 10K is an annual trail running event held at Bothe-Napa Valley State Park in Saint Helena, California. Now in its 34th year, the race features challenging courses with hills, streams, and rocky single-track trails, offering a scenic and rewarding ex..

The Western Pacific Marathon event, held at Quarry Lakes Regional Recreation Area in Fremont, California, offers runners a choice of half marathon, 10K, and 5K distances. The course is mostly flat, following the historic Western Pacific Trail, which was originally used in the 1800s to transport grav..

The Bad Ass Backyard Ultra (B.A.B.U.) is a challenging endurance running event held at Dry Creek Parkway in Rio Linda, California, near Sacramento. Participants run a 4.16-mile loop every hour, starting on the hour, with each loop called a "yard." Runners must be ready to start each new loop on time..

The Golden Gate Headlands Marathon, Half Marathon, and 10K is an annual trail running event held in the scenic Marin Headlands near Mill Valley, California. Participants start and finish at the Historic Gunnery Range in Rodeo Valley, running on a course that combines single-track hiking trails and f..

The Diablo Trails Challenge is a trail running event held at 1700 Castle Rock Road, Walnut Creek, California. It offers multiple race distances including a 50K ultra, half marathon, 10K, and 5K, catering to both beginners and experienced ultra-runners. The event celebrates and supports the preservat..

Taking place in Healdsburg, California, the TERREX Lake Sonoma weekend features three distances on April 11, 2026: the Lake Sonoma 50 Mile, the Lake Sonoma Marathon, and the Trail Sisters Half Marathon. The event blends competitive racing with a festival atmosphere, including an Elite division in th..

The Romancing the Island Half Marathon & 10K is an annual running event held at Angel Island State Park near Belvedere Tiburon, California. Participants enjoy a scenic, hilly loop trail that circumnavigates Angel Island, offering stunning panoramic views of the Golden Gate Bridge, San Francisco, Alc..

The Napa Valley Endurance Run is a challenging trail running event held in Calistoga, California, featuring four race distances: 50k, 35k, half-marathon, and 10k. Starting and finishing at the Calistoga Fairgrounds, the courses traverse scenic Robert Louis Stevenson State Park and ascend to the top..

The Badger Cove Half Marathon, held at Del Valle Regional Park in Livermore, California, offers runners a choice of half marathon, 10K, and 5K distances. Scheduled for April 18, 2026, the event features scenic courses through the emerald hills of Lake Del Valle, with the 5K course being virtually hi..

The Mt. Tam Wild Boar Half Marathon & 10K is an annual trail running event held at Mt. Tamalpais State Park in Mill Valley, California.Celebrating its 38th year, the race features a scenic coastal ridge course combining paved roads and single-track dirt trails with stunning views of the Pacific Ocea..

The Miwok 100K is a renowned trail ultramarathon held near Stinson Beach, California, just under an hour from San Francisco. The challenging 100-kilometer course features 11,800 feet of elevation gain across single-track trails, dirt roads, and a short paved section. Runners enjoy stunning views of..

The Tails & Trails Charitable Walk/Run takes place in Windsor, California, at 11010 Estate Lane. This event offers a 5K run and a Dogwood Dash, with a virtual option allowing participants to complete any distance. The event supports a charitable cause and provides a welcoming atmosphere for runners..

The Muir Woods Marathon, Half Marathon, and 7 Mile trail runs take place annually at Stinson Beach, California, offering a challenging and scenic experience. Starting at sea level, participants quickly ascend into the dense, wooded trails of Muir Woods, following the famous Dipsea Trail to Steep Rav..

The Trailquake will take place in Saratoga on Sunday 10 May 2026. You can run between 5 and 13 miles.

Run for Amma is an annual charity running event held at Skyline Ridge Open Space Preserve in Los Gatos, California, celebrating its 15th anniversary in 2026. The event offers three race distances: a challenging 50K with 5,266 feet of elevation gain, a 30K with 3,629 feet of elevation gain, and a 10K..