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Trail Running Calendar near San Ramon 2026-2027

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Explore the top trail runs near San Ramon for 2026-2027! We've gathered 54 exciting trail runs in the area. Check out our detailed list below to find your next local trail run.

May 2027
May
8
Sa

Quicksilver Endurance Runs

Trail Run 50 km 100 km
Trail ultramarathon in Almaden Quicksilver County Park offering 50K and 100K routes with substantial elevation and staffed aid stations.
May
15
Sa

Wildcat Half Marathon

Trail Run 3 mi 6 mi 13 mi
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.
May
23
Su

Diablo Trail Run

Trail Run 4 mi 10 mi ... 26 mi 50 km
Trail races at Diablo State Park in Clayton, CA, with distances from a 50 yard kids dash to a 50K, measured with a Rolatape surveyor's wheel.
May
29
Sa

Beer City Half San Jose

Road Race Trail Run 5 km 10 km 13 mi
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.
May
30
Su

Cinderella Trail Run

Trail Run 8 km Half Marathon ... Marathon 50 km
Trail races in Joaquin Miller and Redwood parks with multiple measured distances, technical single-track sections, and fully stocked aid stations every 3–6 miles.
June 2027
Jun
5
Sa

Calero Trail Run - Spring

Trail Run 5 km 10 km ... Marathon 50 km
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.
Jun
6
Su

Lake Chabot Trail Challenge

Road Race Trail Run 5 km Half Marathon
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.
Jun
12-13
Sa - Su

Bay Area 100

Trail Run UTMB 100M 100 mi
A point-to-point 100 mile ultramarathon in the East Bay with about 18,000 ft of gain, a 33 hour cutoff, scheduled for June 12, 2027.
July 2027
Jul
24
Sa

Bad Bass - Castro Valley

Road Race Trail Run 3 mi 6 mi 13 mi
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
Aug
1
Su

Skyline 50k Endurance Run

Trail Run UTMB 20K/50K Half Marathon 50 km
Trail 50K and half marathon around Lake Chabot Marina in Castro Valley, CA, with finisher shirt, socks, medal, and volunteer-supported aid stations.
Aug
14
Sa

Redwood (Summer) Trail Run

Trail Run 2 mi 5 mi ... 26 mi 50 km
Trail races at Redwood Regional Park near Chabot Space & Science Center offering distances from a 50 yards kids dash to 50K with measured course distances.
September 2027
Sep
4
Sa

Almaden Hills Trail Run - Summer

Trail Run 5 km 10 km ... Marathon 50 km
Trail races from 5K to 50K at Almaden Quicksilver Park on mixed dirt and single track with repeated aid stations and substantial elevation gain.
Sep
11
Sa

Beer City Half Bishop Ranch

Road Race Trail Run 5 km 10 km 13 mi
A day of running and beer tasting at Bishop Ranch on September 11, 2027, featuring a half marathon, shorter races, a beer mile, and an afternoon Shindig.
Sep
25
Sa

Dick Collins Firetrails

Trail Run UTMB 50K/100K Marathon 50 mi 100 km
A September trail event at Lake Chabot offering Marathon, 50 Mile and 100K courses with UTMB qualification and a Bay Area 100 pathway.
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