Trail Running calendar near Rio Linda 2026-2027

Three cross-country races on October 11, 2026 at Miwok Meadows, China Camp State Park in San Rafael, CA, on a roughly 4.20 mile mostly single track course with a short paved section.

Insomnia is a night trail race in the Sierra Nevada foothills offering 35K, 14K and 5K options. Courses are marked with reflective ribbons and headlamps are required; the 35K has a 5 hour 30 minute overall cutoff.

Trail running in Cool, California with 5k, 10k and half marathon options on Sierra Foothills trails. Proceeds support Georgetown Divide Ready by 21 and a Camp Taylor scholarship; family packages, childcare, and a post-race breakfast are inc..

Multi distance trail running at Lake Sonoma offering 100 mile, 50 mile, marathon and 4 person relays with singletrack, aid stations, drop bags and on site camping.

Trail races in Marshall Gold Discovery State Historic Park offer distances from a Kids Run to a half marathon on singletrack and paved sections, with marked courses, aid stations, a 4.5 hour time limit, and on site parking for a fee.

Trail races on Mount Diablo near Walnut Creek on October 17, 2026 offering 30K, Half Marathon, 10K and 5K with possible mud and creek crossings.

A 5k cross country race run in two loops around Willow Hill Reservoir next to Folsom High School, part of the Pacific Association USATF Cross Country Grand Prix, with a $75 bonus for breaking an age group record.

Trail races in Upper Bidwell Park featuring a 13.1 mile half marathon and a 4 mile hourly endurance challenge with creek crossings, single track trails, aid stations, bag check, bike valet, and reusable cup provision.

A themed charity run and community festival on October 18, 2026 in Downtown Roseville, CA, supporting the bleeding disorders community. The day includes a timed 5K, a one mile walk, festival food, carnival games, and a remembrance ceremony.

An endurance event at Beals Point, Granite Bay featuring hourly 4.16 mile laps until one runner remains, plus a 12 hour Mini Last Person Standing option. Aid is available at the start area and runners may set personal aid stations.

A backyard ultra at Beals Point in Granite Bay where runners run a 4.16 mile loop each hour until one remains. A 12 hour Mini format offers the same hourly lap with a fixed limit.

The Rubicon is a remote on and off-trail foot race at Oxbow Reservoir, CA, organized by Skybreaker Racing. It offers three routes from about 15 to 43 miles with large elevation gain and multiple water crossings.

Experience the autumn scenery of Jenkinson Lake at the Trail Run at Sly Park. This event offers distances from a 5K to a 50K ultra on shaded pine forest trails with rolling hills and lakeside views.

Trail run at Salmon Falls Ranch with a single lap 10K (10.5K) and a two lap half marathon on single track trails featuring creek crossings, climbs and views. Proceeds support the American River Conservancy.

Trail marathon, half, 10K and 5K at Bothe Napa Valley State Park on October 24, 2026, limited to 300 participants on marked single track routes.

Oakland Hills Trail Run features 10K, half marathon and 35K courses through Redwood Regional Park with technical trails, marked routes, aid stations and chip timing. The event is cupless and limited to 330 runners.

A cross-country meet at Radke Martinez Regional Shoreline on October 24, 2026 with three 4.1 mi races over grass, dirt, and path terrain.

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 races at Beal's Point near Folsom Lake offering a 100 mile and a 50K course with major elevation, stocked aid stations, drop bag and pacer rules.

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.