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Trail Running Calendar near San Jose 2026-2027

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Explore the top trail runs near San Jose for 2026-2027! We've gathered 50 exciting trail runs in the area. Check out our detailed list below to find your next local trail run.

April 2027
Trail race at Santa Teresa County Park on April 3, 2027 offering 5K, 10K, 10 mile and half marathon on marked, hilly trails.
Trail races from 5K to 50K on out and back courses in Sierra Azul at Almaden Quicksilver County Park on April 3, 2027, with aid stations and drop bag service.
Trail races at Lake Chabot Regional Park around the reservoir, with distances from a 50-yard kids dash up to a 50K measured for accuracy.
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 5K mud and obstacle run at Club Moto in Livermore on April 17, 2027 with required signed waiver, a spectator fee, and listed entry prices.
Trail races on April 17, 2027 through Huddart Park and Purisima Creek Redwoods with 10K, half, 35K, and 50K options, cupless and chip-timed.
Trail races at Skyline Ridge Open Space on April 24, 2027, offering distances from a 50 yard kids dash to a 50K with ocean and mountain views.
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.
Multiple trail distances at Almaden Quicksilver Park with marked courses, aid stations, drop bag service, and substantial elevation gain across short and ultra distances.
Six-hour trail challenge where runners complete a 5K each hour; finish all six laps to earn the OUTLAST medal and a spot on the world leaderboard.
May 2027
Trail ultramarathon in Almaden Quicksilver County Park offering 50K and 100K routes with substantial elevation and staffed aid stations.
Trailquake in Saratoga on Mother's Day offers 5K, 10K, a half marathon and a hiker division on redwood and pine forest trails. Finishers receive custom medals and shirt options.
Trail event in Los Gatos offering 50K, 30K and 10K at Skyline Ridge with proceeds donated to UCSF cancer research.
May 29, 2027 at Almaden Lake Park in San Jose, multiple runs from a half marathon to 1 mile events, plus a beer tasting and a beer mile with four beers included.
June 2027
Trail races at Calero County Park on June 5, 2027 from a kids run to a 50K, featuring single track, hills, aid stations, toilets, and paid registration.
Lake Chabot Trail Challenge on June 6, 2027 in Castro Valley features a chip timed half marathon and a 5K on scenic trails and roads.
Trail ultras at Almaden-Quicksilver County Park on June 12, 2027, offering 100K, 50M, 50K, marathon and 30K with marked courses, aid stations, drop bags and pacer support.
July 2027
Multi-distance trail ultrarun at Calero County Park featuring a 16 mile loop, aid stations, drop bag and pacer options, with hilly single-track and wildlife hazards.
Trail races in Santa Cruz through ancient coastal redwoods, meadows and ridges, with distances from a kids 0.25 mile run up to 50K.
Community 10K and 5K in Los Gatos with mountain trails, informational booths and CPR training focused on addiction and fentanyl awareness.
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