Alameda County
Trail Running Calendar near Alameda County 2026-2027
Explore the top trail runs near Alameda County for 2026-2027! We've gathered 42 exciting trail runs in the area. Check out our detailed list below to find your next local trail run.
April 2027
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.
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
June 2027
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
July 24, 2027 at Lake Chabot Marina features 5K, 10K, half marathon, virtual 13.1 and a Half Marathon Hiker, with registration dates and published fees per event.
August 2027
Trail 50K and half marathon around Lake Chabot Marina in Castro Valley, CA, with finisher shirt, socks, medal, and volunteer-supported aid stations.
September 2027
Point-to-point marathon from Almaden Quicksilver Hacienda Entrance to Mt. Umunhum and back with 5,515 feet of ascent and a nine hour limit.
A September trail event at Lake Chabot offering Marathon, 50 Mile and 100K courses with UTMB qualification and a Bay Area 100 pathway.