Clayton
Trail Running Calendar near Clayton 2026-2027
Explore the top trail runs near Clayton for 2026-2027! We've gathered 39 exciting trail runs in the area. Check out our detailed list below to find your next local trail run.
September 2026
A 40th edition cross country meet in Golden Gate Park with an approximately 4 mile two loop course over grass, dirt, and rolling hills.
Historic Bay Area trail event offering 100K, 50 mile and marathon courses, all UTMB indexed with the 50 mile in the Pacific USATF Grand Prix.
October 2026
A three day weekend at McNear’s Beach Park combining an Olympic distance triathlon, a trail half marathon, a kids fun event, and a combined challenge.
21st Annual Garin Park XC Challenge at Garin Regional Park is a USATF Pacific Association cross country meet with about 5K courses featuring hills, scenic views, and a half mile flat finish.
Experience a 12.4 mile loop to the summit of Mount Diablo featuring 4,000 feet of elevation gain and a steep descent through scenic California trails.
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.
Cross-country meet at Radke Martinez Regional Shoreline on October 24, 2026, with three approximately 4.1 mile races over grass, dirt, and path surfaces.
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
A fundraiser in Joaquin Miller Park featuring a 5 km trail race and a 1 mile fun run to support Oakland Tech PTSA and student programs.
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 Thanksgiving weekend race at Quarry Lakes Regional Recreation Area offering a mostly flat half marathon, 10K, 5K and a short kids run plus 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.
Experience an urban adventure through San Francisco starting from Twin Peaks with 50-mile and 50K fat ass style courses that visit the city's most iconic landmarks.
Support youth athletics in Oakland by participating in a 5K or Kids Fun Run through the scenic Meadow at Joaquin Miller Park.