California
California Trail Running Calendar 2026-2027
Explore the best trail runs in California for 2026-2027! Our updated list features 392 exciting trail runs across the region. Find your next trail run in California below and join the trail community at these great events!
August 2027
A scenic trail event from Lake Chabot Marina offering a 50K loop and a half marathon with staffed aid stations and a plant based finish festival.
Mountain road and trail races at Green Valley Lake offering 5K, 10K and half marathon courses with aid stations, chip timing, and post-race community activities.
Experience a historic Southern California tradition with a 5K or 10K run around scenic Lake Gregory and through pine forests at 4,720 feet elevation.
Trail races at Redwood Regional Park near Chabot Space & Science Center offering distances from a 50 yards kids dash to 50K with measured course distances.
A community running event in Felton, California with a 10K through Henry Cowell Redwoods and a one mile kids race plus a pancake breakfast.
A 13.7 mile out and back on the Dipsea Trail from Stinson Beach to Mill Valley with handicapped starts and annually adjusted wave assignments.
Trail 5K and 10K at Granite Beach on August 22, 2027, open to runners, walkers, and their dogs with medals for finishers and bandanas for dogs.
Obstacle course weekend at Mahon Ranch with Sprint 5 km, Super 10 km, kids races and Hurricane Heat events on August 28 and 29, 2027.
October 2027
Scenic 5K trail run on rolling double track through Keyesville Recreation Area, held as part of the Keyesville Classic weekend with finisher awards and event village activities.
November 2027
Two nights on the Backbone Trail near Malibu covering about 69 miles and 12,963 ft of ascent, with Runner, Light 10 lbs and Heavy 25 lbs categories.