Trail Running calendar near North Fork American River 2026-2027

Choose from three trail distances—50K, 25K, or 10K—starting from the Cool Staging Area in California. Each course features significant elevation change and a generous 10-hour cutoff for the longer races. All participants get a race shirt, a..

Run through the scenic single track trails of Bothe Napa Valley State Park. Choose from marathon, half marathon, or 10K distances on this popular course. Participation is limited to 300 runners for the annual trail event.

Join the final edition of this historic Placerville fundraiser featuring 5K and 10K distances on the El Dorado Trail to support youth and family services.

Experience the trails of Clayton at the Diablo Summit Challenge. Run a 22.5 km course starting at Mitchell Canyon Road and support local community initiatives through this outdoor adventure.

Join the 11th annual Mighty Dog Trail Runs at Folsom Lake featuring 10K and 5K distances. Runners and walkers can compete with their dogs for finisher medals and special canine bandanas on scenic granite trails.

The Bad Ass Backyard Ultra tests endurance with a relentless hourly loop format in Rio Linda. Complete a 4.16-mile loop every hour to stay in the race. As an official Backyard Ultra, it offers a path to national and world championship quali..

Run on the historic Western States trail at the Knickerbocker Canyon Trail Run. Choose from four distances, from a 5K to a challenging 35K, all starting from American River Overlook Park. The course features river views, the iconic No Hands..

Experience the scenic foothills of El Dorado Hills on single track trails overlooking Folsom Lake. Choose from four race distances ranging from a 5K to a Half Marathon through rolling hills and oak groves.

Experience an obstacle course weekend at Woodward Reservoir Regional Park near San Jose. Choose from distances ranging from a 5k Sprint to a 50k Ultra on a flat course designed for personal performance.

Experience the scenic beauty of Mount Diablo with trail races ranging from 5K to 50K. Support local land preservation while enjoying a professional event featuring a post race BBQ in Walnut Creek.

Experience a historic trail journey from Folsom to Auburn along the beautiful American River Parkway with race options coverging 10, 25, and 50 miles.

The Sludge Trudge 5K is a paved run/walk at North Natomas Regional Park. It's a sanctioned event with professional timing and awards for top finishers. The event is hosted for a specific community group and their guests.

A women focused 10K in Auburn on April 11, 2026 featuring scenic trail loops, finisher shirts, age group awards and a raffle with four winners earning a trip to a women only running camp in Spain.

Explore the rolling hills of Cronan Ranch at the Magnolia Magic River Trail Run. This event offers a range of distances on dirt and rock trails, from a 5K to a 50K ultra. All participants receive a medal and access to aid stations along the..

Event Overview The Calistoga Mountain Run is a trail running event with distances of 50k, 35k, a half marathon, and a 10k. It starts in downtown Calistoga, California. The routes take runners onto trails and into Robert Louis Stevenson Stat..

Explore remote trails along Folsom Lake with the Outlands Endurance Races. Choose from 25K, 50K, or 50-mile distances on scenic singletrack. The event starts and finishes at Peninsula Campground in Pilot Hill.

Experience a scenic 14.5 mile trail run along the Bullards Bar Reservoir in Camptonville. This fundraiser for the Wildland Firefighter Foundation features single track trails and support from the local fire community.

Join the community at Feeney Park for the Mr Frogs Wild Run in Murphys California. Choose between a children's fun run plus five or ten kilometer courses featuring scenic neighborhood loops and a festive medal ceremony.

About the event The Canyons Endurance Runs by UTMB is an event in the historic gold-rush town of Auburn, California. It takes place in the northern California foothills of the Sierra Nevada range. The event is described as taking you back t..

Trail races held inside Marshall Gold Discovery State Historic Park near Coloma offer distances from a kids run to a half marathon. Courses mix singletrack, switchbacks and paved sections, with marked routes, aid stations and on-course mars..