Trail Running calendar near Riverbank 2026-2027

A USATF sanctioned trail event at Stevens Creek Reservoir offering a half marathon, 11K, and a family Lollipop Loop around shaded singletrack and ridge views, with aid stations, limited field sizes, post-race barbecue, and charity support.

A trail running event at Calero County Park offering distances from a kids run to a 50K across single-track and dirt roads, with named aid stations, drop bag support, bib color assignments, and time limits for longer races.

Trail running at Bass Lake, CA on September 12, 2026, with 50 mile, 50K and half-marathon options through Sierra National Forest terrain, aided by stocked stations and a shuttle to the start.

Trail runs at Granite Beach on Folsom Lake with new 10 mile and 5K courses, aid stations, age group awards, a finisher beer glass and a postrace meal.

Rocky Ridge is a trail running event at Las Trampas Wilderness in San Ramon, California on September 19, 2026. It features a half marathon plus 10K and 5K courses with uphill trail sections and scenic vistas.

Three trail events at Lake Chabot Regional Park in Castro Valley, CA, including a Bay Ridge 100k, Firetrails 50, and Golden Hills Marathon. Races are UTMB Index and the 50 mile is part of the Pacific USATF Grand Prix; time limits apply.

Trail running in shaded redwood forest at Sanborn County Park on September 27 2026, with 10K, half marathon and 50K options; steep singletrack, shuttle parking, chip timing and specific mandatory gear for the 50K.

Trailblazer Race on September 27, 2026 in Mountain View features a 10K, 5K, 3 mile walk and a 1 mile kids run. Proceeds support the Friends of Stevens Creek Trail and free kids activities are offered.

Granite Head Trails & Ales Trail Races feature 6.6-mile and 11.2-mile courses. Runners get a tech T-shirt and can enjoy post-race fajitas and a beer. The event is the final race in a local trail running series.

A trail race at Almaden Quicksilver County Park with distances from 5K to 50K. Courses are out-and-back, marked with colored ribbons, include aid stations and toilets, and the longer races reach Bald Mountain and Mt. Umunhum.

A 12.4 mile loop up to the Mount Diablo summit and back in Clayton, California, featuring about 4,000 feet of ascent and descent and a 5 hour cutoff. Entry includes a shuttle, raffle entry, and a unique finisher item.

Trail races from 5K to 35K around Briones Reservoir near Orinda, CA, featuring mixed single-track and fireroad terrain, chip timing, cupless aid stations, and a 300-runner capacity.

Run through the historic site of the 1848 gold discovery in California. This event features multiple trail distances from a 5K to a Half Marathon on scenic singletrack paths along the American River.

A trail running event at Mount Diablo in Walnut Creek on October 17, 2026 offering 30K, Half Marathon, 10K and 5K courses on hilly trails where mud and creek crossings are possible.

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.

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.

A Last Person Standing format at Beals Point, Granite Bay where runners complete a 4.16 mile loop each hour until one remains. A 12 hour Mini version is available, with start area aid and wood awards plus a quarter zip for entrants.

A repeating 4.16-mile trail loop event at Beals Point where runners start a new lap each hour until one remains; a Mini version ends after 12 hours. Aid is only at the start/finish and personal aid areas are encouraged.

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.

A trail race at Acorn Creek Trailhead near Pilot Hill offering a 10K lap and a two-lap half marathon on singletrack with creek crossings and scenic overlooks. The event raises funds for the American River Conservancy and supports local trai..