Castro Valley
Trail Running Calendar near Castro Valley 2026-2027
Explore the top trail runs near Castro Valley for 2026-2027! We've gathered 79 exciting trail runs in the area. Check out our detailed list below to find your next local trail run.
February 2027
Trail races at Lake Chabot Regional Park near Castro Valley with 50K, 30K, half marathon, 10K and 5K options, organized by Inside Trail Racing.
March 2027
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 spring race at Quarry Lakes Regional Recreation Area in Fremont on March 27, 2027 offering half marathon, 10K, 5K and a remote runner option.
April 2027
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 at Mount Diablo on April 3, 2027 offering 50K, half marathon (including a hiker option), 10K and 5K with proceeds benefiting Save Mount Diablo.
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.
A trail event at Lake Chabot Regional Park offering distances from a 50‑yard kids dash to a 50K ultramarathon. The looped course circles the Lake Chabot reservoir and surrounding hills with measured distances.
No Foolin' Foot Race in San Carlos on April 24, 2027 offers 15K, 10K, 5K and a 1K kids trail course across Big Canyon, Eaton and Pulgas Ridge, with proceeds supporting local open space trail maintenance.
May 2027
A race day in El Sobrante with a half marathon, 10K, 5K and a hiker division through the hills of Wilcat Canyon; registration windows and fees vary by distance.
Beer City Half San Jose on May 29, 2027 at Almaden Lake Park pairs trail and park running with a beer festival. Events include a half marathon, 10k, 5k, a 1 mile Beer Stroll, the Beat the Beast beer mile, and beer tastings.
June 2027
A point to point 100 mile trail race in Berkeley with 18,000 ft of climb, a 33 hour limit, and a capped field of 300; a Western States qualifier and UTMB Index race.
A historic 7.4 mile trail race from Mill Valley to Stinson Beach, known for steep stairs, a unique handicapping start system, and a limited field of about 1,500 runners.