Hayward
Trail Running Calendar near Hayward 2026-2027
Explore the top trail runs near Hayward for 2026-2027! We've gathered 75 exciting trail runs in the area. Check out our detailed list below to find your next local trail run.
October 2026
Trail races of 5K, 10K, half marathon and 35K around San Pablo Reservoir on EBMUD trails, with chip timing, stocked aid stations, a cupless policy, and a 300-runner capacity.
Trail races in Walnut Creek on October 17, 2026 with distances from 5K to 30K; walkers welcome and courses may include mud and creek crossings.
Coastal courses in Half Moon Bay with a half marathon, 10K, 5K, kids' run and virtual options, with proceeds supporting Senior Coastsiders.
Cross-country meet at Radke Martinez Regional Shoreline on Oct 24, 2026 featuring three 4.1 mile races over grass, dirt, and path; online registration closes Oct 23.
Virtual worldwide challenge and an in-person gathering at the San Francisco Ferry Building on October 24, 2026, fundraising for the Breast Cancer Research Foundation.
November 2026
Support student programs and the Oakland Tech Cross Country team at Joaquin Miller Park. Choose between a five kilometer trail race or a one mile fun run through the redwood trees.
Trail event at Huddart Park offering multiple distances, a 6 Hour Challenge, cupless aid stations, post-race pancake breakfast and female-only awards.
Experience a scenic trail run around the Lake Chabot reservoir and hills. With distances from a 50 yard kids dash to a 50K ultramarathon there is an option for everyone at this Castro Valley event.
A Thanksgiving Day 5K and 1 mile event at San Leandro Marina with canicross teams, kids races, and proceeds benefiting animal welfare; the course is flat with mixed surfaces and free parking is available.
A post-Thanksgiving running event in Fremont offering a half marathon, 10K, 5K, a short kids run, a food drive for the Alameda County Community Food Bank, and a connector medal option.
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 single loop ultra in San Francisco offering 50 mile and 50K options starting and finishing at Twin Peaks with volunteer aid stations at approximate mile markers.