Trail Running calendar near Sacramento 2026-2027

Multiple trail distances run through Redwood Regional Park on March 20, 2027 at Chabot Space & Science Center. Routes use East Ridge, West Ridge, Stream and Bridle trails and distances were measured with a Rolatape surveyor's wheel.

A trail event at Granite Beach offering 5K and 10K courses plus a Mighty Mile for senior dogs, with divisions by dog size and Cani Cross, single aid station, finisher medals, and awards for multiple categories.

An hourly backyard ultra on Dry Creek Parkway near Sacramento where runners repeat a 4.16 mile loop until only one completes the most yards. Each loop must be finished within the hour and the last runner to complete a loop wins.

Western Pacific 2027 takes place March 27, 2027 at Quarry Lakes Regional Recreation Area in Fremont, California, offering a half marathon, 10K and 5K on a mostly flat course that follows the historic Western Pacific Trail.

A multi-distance Spartan obstacle weekend at Modesto Reservoir Regional Park in Waterford, CA. Races include Sprint 5 km, Super 10 km, Beast 21 km and Ultra 50 km with 20 to 60 obstacles plus a kids race.

Trail running event in Walnut Creek on April 3, 2027, offering 50K, half marathon, 10K and 5K. A portion of entry fees supports Save Mount Diablo; remote runner and BBQ options are available.

A women's only 10K in Auburn on April 17, 2027 that follows scenic trail loops with aid stations and age-group awards; the overall winner and four additional finishers will be selected to receive all-expenses-paid trips to a women's running..

A weekend of trail running and a 50K mountain bike race around Folsom Lake in Pilot Hill, CA, featuring 25K, 50K, 50 mile runs and a 50K MTB course with multiple aid stations and a combined challenge option.

Badger Cove is a running event in Livermore, CA on April 17, 2027 offering a half marathon, 10K, 5K and a hiker division. Registration opens January 1 and closes February 2 with fees varying by event.

A fundraising running event at Spring Lake Regional Park in Santa Rosa on April 17, 2027 offering a Half Marathon, 10K and 5K. The event emphasizes low waste aid stations and donates part of proceeds to Trione-Annadel State Park.

Multi-distance trail event in Auburn, California crossing sections of the Western States Trail and serving as a UTMB World Series and Western States qualifier. Distances range from 25K up to 100M, with the 100K offering Western States Golde..

A trail event at Lake Chabot Regional Park offering distances from a 50‑yard kids dash to a 50K ultramarathon. The looped course circles the Lake Chabot reservoir and surrounding hills with measured distances.

A new backyard ultra near Pacerville, California runs a 4.167 mile loop each hour until one runner remains. The weekend combines a community campout, a kids race, on-site crew areas, and net proceeds to local nonprofits.

A timed half marathon through eight Napa Valley wine estates finishing in Yountville. The event includes a finish line Wine Village with live music and complimentary wine tastings.

Trail runs at Skyline Wilderness Park in Napa on May 15, 2027 offer four distances from 10K through 50K on reworked trails with significant elevation. Aid stations are staffed, the event is cupless, and camping is available through the park..

A multi-loop trail event in Napa that uses Skyline Wilderness Park and Suscol Headwaters. Options include an approximately 50 mile solo route and a one-loop ~25 mile course, with cupless aid stations and limited crew and pacer access.

A race day in El Sobrante with a half marathon, 10K, 5K and a hiker division through the hills of Wilcat Canyon; registration windows and fees vary by distance.

Mud Factor Sacramento is a 5K mud and obstacle run at the 300 acre Mahon Ranch in Elk Grove on May 16, 2027, with adult and Kidz family waves, advertised entry fees from $27, and a $10 cash spectator fee for festival access.

The Bay Area 100 will take place in Oakland on Saturday 12 June 2027. You can run 100 miles.

The Run Fast or Pretend Like You Are 100 Mile Relay will take place in Auburn on Thursday 24 June 2027.