Trail Running calendar near Yountville 2026-2027

Trail races at Lake Chabot Regional Park in Castro Valley with 50K, 30K, Half Marathon, 10K and 5K on February 20, 2027.

Experience a trail run across the forest and hills of Angel Island with views of San Francisco and the Golden Gate. Choose from multiple race distances including a youth dash and enjoy a picnic at Ayala Cove.

The Race to the Top of Mt. Umunhum will take place in San Jose on Saturday 6 March 2027. You can run 13 miles.

Trail runs at Granite Beach and Auburn Overlook Park offering 31K, 10K and 5K distances, finisher medals for all and a custom long sleeve hoodie for 31K finishers. Aid stations, post race food and a limited shuttle for 31K runners are provi..

A trail ultramarathon in Marin County on March 13, 2027, with 50K and 50 Mile courses over coastal ridges, redwood single-track, and significant elevation.

A three day trail running weekend in Marin County offering a point to point 100K plus single loop 50K and 28K that summit Loma Alta and Big Rock Ridge.

A multi-distance trail event on March 22, 2025 at Calero County Park in San Jose offering runs from a kids race to a 50K, single track and dirt-road courses, multiple aid stations, and per-distance time limits.

Multiple trail distances run through Redwood Regional Park on March 20, 2027 at Chabot Space & Science Center. Routes use East Ridge, West Ridge, Stream and Bridle trails and distances were measured with a Rolatape surveyor's wheel.

A trail event at Granite Beach offering 5K and 10K courses plus a Mighty Mile for senior dogs, with divisions by dog size and Cani Cross, single aid station, finisher medals, and awards for multiple categories.

An hourly backyard ultra on Dry Creek Parkway near Sacramento where runners repeat a 4.16 mile loop until only one completes the most yards. Each loop must be finished within the hour and the last runner to complete a loop wins.

A mostly-flat running event at Quarry Lakes in Fremont on March 27, 2027, offering a half marathon, 10K, 5K and a remote runner option.

Trail races in Auburn and Cool, CA in March 2027 on sections of the Western States trail with 5K, 10K, half marathon, and 35K distances.

A spring trail race at Pueblo Day Use Area in Santa Teresa County Park on April 5, 2025 offering 5K, 10K, 10 Mile and a half marathon across marked, hilly trails with aid stations and a four hour half marathon limit.

Trail event in Walnut Creek on April 3, 2027 offering 50K, half marathon, 10K and 5K options with part of fees supporting Save Mount Diablo.

A women only 10K trail loop in Auburn with aid stations, age group awards, packet pickup the day before, and travel prizes to Spain awarded by placement and random draw.

A trail event at Skyline Ridge Open Space Preserve offering distances from a 50 yard kids dash to a 50K race. Routes run largely on the Bay Area Ridge Trail with ocean and Santa Cruz Mountains views.

Outlands is a two day endurance event in Pilot Hill, California on April 17 and 18 2027, featuring 25K, 50K and 50M trail runs plus a 50K mountain bike course over single track and double wide trails.

Badger Cove is a running event in Livermore, CA on April 17, 2027 offering a half marathon, 10K, 5K and a hiker division. Registration opens January 1 and closes February 2 with fees varying by event.

Trail fundraiser on April 17, 2027 offering a Half Marathon, 10K and 5K with a hilly technical half and a cup free policy.

Auburn trail races from 25 km to 100 miles that share sections of the Western States Trail and qualify runners for UTMB World Series and Western States.