Trail Running calendar near Redwood City 2025-2026

Event overview The Hacienda Hills Trail Run - Winter takes place on Saturday, January 3, 2026, outside San Jose, California at Almaden Quicksilver County Park, Hacienda Entrance. The event offers multiple trail running distances with increa..

Hope in Every Step 5K — event details Hope in Every Step 5K takes place on January 10, 2026 in Modesto, California. The event is a 5K run/walk on a 3.1-mile course using the trails at East La Loma Park, located at 2001 Edgebrook Drive, Mode..

Event overview The Crystal Springs Trail Run takes place on Sunday, January 18, 2026, at Huddart Park (Werder Shelter), 1100 Kings Mountain Road, Woodside, CA 94062. Distances offered: 8K Half Marathon 35K Marathon 50K Kid's Run (6 years a..

Crystal Springs Trail Run : January 18, 2026 The Crystal Springs Trail Run takes place at Huddart Park (Werder Shelter), 1100 Kings Mountain Road, Woodside, CA. The event includes the following distances: 8K Half Marathon 35K Marathon 50K..

Pacifica Foothills Trail Run The event takes place on January 24, 2026 at San Pedro Valley Park in Pacifica, CA. The race has a total capacity of 350 runners and a 6 hour time limit. Parking is available inside the park for $6.00, with limi..

Run scenic trails at Coyote Hills Regional Park in Fremont on Jan 31, 2026, with half marathon, 10K, 5K and remote options. Enjoy marsh and bay views, boardwalks and stocked aid stations plus downloadable GPX files.

Run a scenic and rugged 50.7 mile trail ultramarathon around Fort Ord and Laguna Seca near Monterey, CA, with about 7,080 feet of climbing over two big loops. Expect aid stations, live timing and a custom finisher hat and medal.

Run scenic coastal trails at Fort Ord and Laguna Seca with 10K, 25K and 50K options featuring rolling dunes, dirt tracks and late climbs. Well stocked aid stations, live tracking and finisher medals for a quintessential California trail day..

Event overview The Mt. Umunhum Trail Conquest - Winter is a trail running event held at Almaden Quicksilver County Park, Hacienda Entrance, 21785 Almaden Rd, San Jose, CA 95120. The event offers multiple distances: 50K Marathon 30K 1/2 Mar..

Event details Bay Breeze is scheduled for February 14, 2026, at San Leandro Marina Park (14001 Monarch Bay Dr, San Leandro, CA). The event offers these distances: Half marathon 10K 5K All races start and finish at San Leandro Marina Park...

Event details The Montara Mountain Trail Run takes place Saturday, February 21, 2026, at San Pedro Valley Park, 600 Oddstad Boulevard, Pacifica, CA 94044. The event offers multiple distances: 10K Half Marathon 20 mi Marathon 50K Kid's Run..

Take on scenic technical trails at Lake Chabot Regional Park in Castro Valley with distances from 5K to 50K. Aid stations, chip timing and a cupless format make this a true trail challenge for all levels.

Zoom Angel Island is a trail running event on Angel Island, accessible via chartered ferries from Tiburon, California, offering spectacular views of Marin County and San Francisco. Distances include 5 miles, 10 miles, 15 miles, plus a Kids..

Marin Ultra Challenge offers 50 Mile and 50K trail races around Mt Tam and Muir Woods, winding coastal bluffs, redwood canyons and technical single track. Expect big climbs, stunning views and live runner tracking.

Event overview The Napa Valley Trail event takes place on Saturday, March 21, 2026, at Bothe-Napa Valley State Park in Saint Helena, California. The race is limited to 300 participants. Distances offered: Marathon Half Marathon 10K The ev..

Redwood (Spring) Trail Run is held at the Chabot Space & Science Center in Oakland, California, featuring multiple distances from 5 miles up to 50K, plus a Half Marathon, Marathon, 30K, a 5K, and several youth events. The course winds throu..

Enjoy a scenic trail run along the historic Western Pacific route at Quarry Lakes in Fremont on March 28, 2026, with half marathon, 10K, 5K or remote entries. Brazen Racing welcomes runners, walkers and hikers on a mostly flat dirt and grav..

Event details The 41st annual Golden Gate Headlands race takes place on Saturday, April 4, 2026, at the Marin Headlands Visitor Center and Fort Barry area in Mill Valley, California. The event offers multiple distances: Marathon Half Marat..

Run scenic trails around Mount Diablo with distances from 5K to 50K, including a Brazen Ultra Half Series half marathon. Brazen Racing hosts this April event that benefits Save Mount Diablo and celebrates the region's protected open space.

Event overview The 35th annual Romancing the Island event takes place on April 11, 2026 at Angel Island State Park, Belvedere Tiburon, CA. The race offers two distances: Half Marathon - completes the island loop twice 10K - single loop aro..