Trail Running calendar near Riverbank 2026-2027

A roughly 12 mile loop from Mitchell Canyon to the Mount Diablo summit and back, with about 4,200 feet of elevation change. The course includes steep climbs via Eagle Peak and Bald Ridge and a five hour cutoff.

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.

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.

Join the Vampire Run in Roseville for a timed 5K or a 1 mile walk to support the bleeding disorders community. Enjoy a festive atmosphere with costumes, carnival games, and medals for all runners.

A repeating loop endurance event at Beals Point, Granite Bay, where runners complete a 4.16 miles loop every hour until one person remains. A 12 hour Mini option offers the same format with a fixed time limit and on site aid.

A Last Person Standing Backyard Ultra at Beals Point, Granite Bay, featuring a 4.16 mile loop with 320 ft elevation gain. A Mini 12 hour event uses the same hourly loop with a fixed 12 hour limit.

A fall trail race at Sly Park on October 24, 2026 with a 100 runner cap, multiple distances around Jenkinson Lake, shaded single track and horse trails, two aid stations, drop bag support and a finisher medal.

Trail races near Pilot Hill, CA featuring a half marathon and a 10K on singletrack with creek crossings and views; the event is a fundraiser for the American River Conservancy and is limited to 175 participants.

Trail races in Redwood Regional Park near Oakland on October 24, 2026 include 10K, half marathon and 35K with significant elevation gain. The event uses chip timing, cupless aid stations and has a 330 runner capacity.

A Halloween-themed running event at Hellyer County Park with 5K, 10K, half and full marathon distances, youth divisions, a free kids' dash, a costume contest, certified half and full courses, aid stations every 2-4 miles, and cupless hydrat..

Trail races in Almaden Quicksilver Park from 5K to 50K over hilly dirt roads and single-track, with two staffed aid stations, drop-bag service for longer distances, and a finisher medal for all participants.

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.

Event Details The Rio Del Lago 100 Mile Endurance Run is a trail race held on Saturday, November 7, 2026, starting at Beal's Point in Folsom Lake State Recreation Area, within the Sierra Foothills of California. Course Information The 100-m..

A trail event at Huddart Park on November 7, 2026, featuring multiple distances from a youth dash to a 6 Hour Challenge, single-track redwood trails, aid stations, chip timing, and a post-race pancake breakfast.

A trail race at Lake Chabot Regional Park in Castro Valley offering distances from an 8K and half marathon up to 50K plus a free kids 50 yard dash. The course loops the reservoir with marked routes, aid stations every 4 to 5 miles, and cupl..

A fall trail event at Rancho Cañada del Oro Open Space Preserve offering distances from 5K to 50K on hilly single-track and dirt roads, with aid stations, multiple water stops, strict cutoff limits, and limited parking.

A flat trail event at Quarry Lakes Regional Recreation Area offering 5K, 10K, half marathon and youth races, cupless aid stations every 2–5 miles, and a USATF-certified half marathon course.

Navigate the redwood forests and meadows of Santa Cruz in this 2 or 4 hour map based adventure scramble. Explore the wilds in teams of up to five while hunting for 20 unique checkpoints.

A multi-distance trail event in the El Dorado Hills foothills offering routes from 5K to a trail marathon on mostly single-track dirt with rolling hills, aid stations, drop-bag service, and a creek crossing.