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Trail Running Calendar near Fremont 2026-2027

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Explore the top trail runs near Fremont for 2026-2027! We've gathered 63 exciting trail runs in the area. Check out our detailed list below to find your next local trail run.

November 2026
Quarry Turkey in Fremont offers a half marathon, 10K, 5K and a virtual race over Thanksgiving weekend, plus a Little Turkeys kids race and a food drive.
December 2026
A seasonal cross country event in San Francisco on 12/6/2026 with live and virtual options. Distances include a 5K, 10K, and a nine mile course; all entrants receive race swag and there is a pre race bib and shirt pickup with Brewfest.
An urban 50K and 50 mile fat ass run from Twin Peaks in San Francisco, with volunteer aid stations and a four hour forty five minute cutoff at mile 25.
Youth focused event in Oakland with a 1 mile kids fun run and a 5K trail run at Joaquin Miller Park, with limited parking and packet pickup before the race.
Trail races through Sanborn County Park redwoods on December 12, 2026 offering 5K, 10K and half marathon options with chip timing and finisher medals.
Trail running in Woodside, CA with 10K, half, 35K and 50K courses through redwoods and varied single track terrain.
New Year's Eve at Lake Chabot in Castro Valley offers trail races on December 31, 2026, with a half marathon, 10K and 5K; walkers and hikers are welcome and free photos are provided.
January 2027
Multi-distance trail races at Lake Chabot across New Year's Eve and New Year's Day, including 5K, 10K, a half marathon and a virtual option.
Trail races at Almaden Quicksilver Park on January 2, 2027 offering distances from a kids run to a 50K with marked dirt road courses and multiple aid stations.
Multiple trail races on 01/17/2027 at Huddart Park, from a 50 yard kids dash to 50K, set among redwoods, ferns and trails at King's Mountain and Bear Gulch.
Trail running weekend in San Francisco that crosses the Golden Gate Bridge and runs through the Marin Headlands, with multiple race distances and spectator access.
Trail races in Pacifica on twisty single-track with 10K, half marathon, and 30K options, chip timing, substantial elevation, and cupless aid stations.
A mixed-surface running event at Coyote Hills Regional Park offering a half marathon, 10K, and 5K with updated courses, GPX files, and stocked aid stations.
Experience the unique Coastal Mountain Habitat and Pacific Coast views at this trail event in Pacifica. With distances from a kids dash to a 50K there are options for many different types of trail runners.
Trail races from 5K to 50K through eucalyptus forests and lakeside trails at Lake Chabot Regional Park near Castro Valley, CA.
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