Clayton
Trail Running Calendar near Clayton 2026-2027
Explore the top trail runs near Clayton for 2026-2027! We've gathered 43 exciting trail runs in the area. Check out our detailed list below to find your next local trail run.
August 2026
A limited-field island race on August 29, 2026 featuring a scenic half marathon and 10K circling Angel Island with ferry access and medals for half finishers.
A waterfront 5K through Crissy Field and Fort Point Promenade in San Francisco on August 30, 2026, with live and virtual entry options and advance registration required.
September 2026
Monthly Richmond meetups offering a community hike plus an optional trail-run option, organized by FIERCE Advocates with Moving Forward and Richmond Run Club.
A 40th edition cross country meet in Golden Gate Park with an approximately 4 mile two loop course over grass, dirt, and rolling hills.
Rocky Ridge in the Las Trampas Wilderness near San Ramon on September 19, 2026 features a half marathon, 10K and 5K on hilly trail terrain with remote runner options.
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 weekend of Olympic-distance triathlon, an Olympic relay, a trail half marathon and a kids fun event at McNear’s Beach Park in San Rafael.
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.
A 12.4 mile loop from Mitchell Canyon to the Mount Diablo summit and back in Clayton, CA, featuring about 4,000 feet of ascent and a five hour cutoff.
October 10 2026 trail races at San Pablo and Briones Reservoirs in Orinda CA featuring 35K, half marathon, 10K and 5K on single-track and fire roads.
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 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.
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.