Trail Running calendar near Waterford 2026-2027

A waterfront group run along Baylands Trail in Mountain View organized by Bay Area Run Crew. The listing includes a meetup, warm up, and a social hour with coffee at Shoreline Lake Boathouse.

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 of 50K and 21K in Castro Valley that start and finish at Lake Chabot Marina. Organized by Scena Performance, the event features community volunteer aid stations, finisher swag, GPX files, and UTMB indexing.

A high Sierra trail event at Horse Canyon Trail Junction offering 5.6M, 10.5M, 21M and 50K options across alpine loops. The course sits near 7,400 feet with two aid stations, limited field size, and variable mountain weather.

A trail running event on Aug. 8, 2026 in Gilroy, California through redwood groves and peak viewpoints. Distances include a 5K, 10K and half marathon with significant elevation gain, and proceeds support youth scholarships.

Bear Creek on August 8, 2026 offers 5K, 10K and a 13.32-mile half marathon in the Briones Regional Park area, with a virtual Remote Runner option. Entry windows and fees are listed for each race.

The 50th annual Pinecrest Run on August 9, 2026 in Pinecrest, CA features a five mile route around Pinecrest Lake and a one mile paved race. The event raises funds for Pinecrest Expedition Academy and does not allow pets.

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.

Experience the beauty of Jenkinson Lake at Sly Park Recreation Area with trail distances ranging from a 5K to a 50K ultra marathon through scenic pine forests and rolling single track.

NorCal Spartan Event Weekend at Mahon Ranch in Elk Grove, CA on Aug 29 to 30 2026 offers Sprint, Super and kids obstacle races across rolling trails and river crossings. Team entries and service member discounts are available.

The inaugural Apple City 5k at Pinto Lake County Park in Watsonville on 30 August 2026 offers a 5k on gentle, scenic trails and a kids 1k around the soccer fields. Half the event funds support the Pajaro Valley Education Foundation.

Experience the natural scenery of Mount Diablo State Park through a variety of trail races. Runners can select distances ranging from 4 miles to a 50K with spectacular views of the San Francisco Bay Area.

A chip-timed one-mile uphill trail race to the top of Pincushion Mountain in Friant, CA, with awards and finisher items. A Mountain Goat edition allows multiple timed ascents within a four-hour window and includes special awards.

Trail trail races at Stevens Creek Reservoir in Cupertino on September 12, 2026 include a Half Marathon, 11K and a 2.5 mile Lollipop Loop. The USATF sanctioned event is hand timed, capped for the longer distances, and supports wildfire reli..

A trail running event at Calero County Park offering distances from a kids run to a 50K across single-track and dirt roads, with named aid stations, drop bag support, bib color assignments, and time limits for longer races.

Rocky Ridge in San Ramon, CA on September 19, 2026 features a trail half marathon plus 10K, 5K and virtual options. The courses include hills and scenic viewpoints.

A set of trail races at Lake Chabot in Castro Valley offering a Bay Ridge 100k, Firetrails 50 and Golden Hills Marathon with published course and aid station plans, set time limits, UTMB indexing, and finisher awards.

Trail running in shaded redwood forest at Sanborn County Park on September 27 2026, with 10K, half marathon and 50K options; steep singletrack, shuttle parking, chip timing and specific mandatory gear for the 50K.

A trail race at Almaden Quicksilver County Park with distances from 5K to 50K. Courses are out-and-back, marked with colored ribbons, include aid stations and toilets, and the longer races reach Bald Mountain and Mt. Umunhum.

A 12.4 mile loop up to the Mount Diablo summit and back with about 4,000 feet of climbing and descending. The race starts and finishes at Mitchell Canyon and includes shuttle service, a post race raffle and a finisher item.