Trail Running calendar near San Martin 2026-2027

Experience the 42nd annual Lake Chabot Trail Challenge featuring a scenic half marathon loop and a paved 5K run. Enjoy views of the San Francisco Bay and Mt Diablo while competing for medals on chip timed courses.

Bay Area 100 is a 100 mile point to point ultramarathon in the East Bay on June 13 2026 with about 18,000 ft of vertical and a 33 hour time limit. Pre-registration runs Sept 1 to Dec 7 2025 and requires credit card information.

Experience a fixed-time event at Crissy Field with stunning views of the Golden Gate Bridge. Run or walk as many laps as you choose in three six or twelve hour blocks as an individual or part of a team.

Annual 5 km and 10 km run and walk in Hunting Hollow at Henry W. Coe State Park, on a relatively flat dirt road through valleys with late spring wildflowers and possible wildlife sightings. Proceeds support Pine Ridge Association projects a..

A multi-distance trail event at Fort Ord National Monument on June 20, 2026, with 50K, 35K, half marathon and 10K courses on varied single-track and fire roads. Chip timing, cupless aid stations, and a 350-runner capacity.

Experience the scenic trails of Lake Chabot Regional Park with a variety of distances including a 5k, 10k, and half marathon. Enjoy a lively atmosphere with a post-race brewfest and handcrafted finisher awards.

A 10 mile trail race in Oakland that starts at Chabot Space and Sciences Center, featuring hilly single track and the Woodmonster climb. The event uses reverse handicap starts by age, includes a team competition, and a hill climb prize.

A community running day at Sycamore Grove Park on July 3, 2026, with a flat 5K on mixed trails and an untimed 400m kids run for ages 12 and under; parking is at Independence Park.

A team navigation run in San Francisco starting at Ghirardelli Square where teams of one to five use a custom map to find checkpoints, with refreshments and social time after the finish.

Multiple trail distances from 5K to 50K on very hilly single track and dirt roads at Rancho Cañada del Oro. The course features scenic foothill views, two aid stations, enforced cutoffs, and finishers receive a medal.

Experience a scenic trail run through ancient Coastal Redwoods and lush river canyons in Santa Cruz. Choose from multiple distances including a 50K and marathon with several river crossings.

An endurance event at Point Pinole Regional Shoreline with 12 hour, 6 hour and 3 hour timed races on a 3.37 mile loop. Individuals and teams of two or three share laps and entry includes an all day picnic.

Trail running at Calero County Park with multiple distances across single track and dirt paths, significant climbs, aid stations and free parking at the park.

Trail races on August 1, 2026 in the Marin Headlands near Sausalito offer 8K, half, 30K and 50K courses with coastal single track, ocean and Golden Gate views. The event is chip timed and runs as a cupless race.

A loop trail race from Lake Chabot Marina through East Bay Regional Parks with substantial climbing, offered as a 50K and 21K on August 2, 2026. Finishers receive a shirt, socks, and a medal.

A trail running event through redwood forests near Gilroy with 5K, 10K, and half marathon options featuring large elevation gains and scholarship fundraising for youth trail running camps.

Bear Creek 2026 in Lafayette California offers a half marathon, 10K, 5K and a remote runner option on August 8, 2026. The trail course includes hills, scenic views and a final mile of downhill shaded single track.

An annual single-loop 50K ultramarathon in Muir Beach, California, traversing famous Marin trails with about 6,500 feet of elevation gain and ocean and Bay Area views.

Experience the trails of Redwood Regional Park in Oakland. Runners can choose from distances ranging from a 50 yard kids dash to a 50K ultramarathon through scenic ridge lines and redwood groves.

Trail races on hilly mixed dirt and single track at Almaden Quicksilver Park with distances from 5K to 50K, aid stations, drop bag service for longer races, and mandatory course markings and cutoffs.