California
California Trail Running Calendar 2026-2027
Explore the best trail runs in California for 2026-2027! Our updated list features 380 exciting trail runs across the region. Find your next trail run in California below and join the trail community at these great events!
February 2027
A self supported single loop 51 mile trail run around San Diego with about 5000 ft elevation change, no course markings and no organized aid.
Trail races at Lake Chabot Regional Park near Castro Valley with 50K, 30K, half marathon, 10K and 5K options, organized by Inside Trail Racing.
A point to point 50 kilometer trail ultramarathon in the Sacramento foothills, running mostly on Cronan Ranch area trails from Magnolia Ranch Trail Head to Folsom Lake. A new half marathon distance has been added and proceeds support Breakthrough T1D..
A trail running event at Sanborn County Park near Saratoga offering Kids, 1 Mile, 4 Mile, 8 Mile and Half Marathon distances on steep, mostly single track trails through mixed evergreen forest with multiple aid stations.
Timed 24 hour, 12 hour and 6 hour events plus set distances on a 2.2 mile loop at Will Rogers State Park in Pacific Palisades, CA, with relay and crew options.
A loop-course trail event in Poway, CA offering 100K (solo or relay), 50K (solo or relay), and a half marathon on February 27, 2027.
Trail races at Tejon Ranch near Lebec, CA on Feb 27, 2027 offering 100k, 50k, 25k and 11k routes with marked courses, aid stations, camping and a finish festival.
Experience a trail run across the forest and hills of Angel Island with views of San Francisco and the Golden Gate. Choose from multiple race distances including a youth dash and enjoy a picnic at Ayala Cove.
A family friendly run and walk in Valencia CA featuring 1K, 5K and 10K options plus virtual races. The USATF certified course runs along the South Fork River Trail and proceeds support Students Off And Running with an expo and festive activities.
March 2027
A point to point half marathon to the summit area of Mt. Umunhum on March 8, 2025, covering about 13.35 miles with 4,767 feet of ascent, marked mainly by pink ribbons and supported by aid stations with toilets.
Trail runs at Granite Beach and Auburn Overlook Park offering 31K, 10K and 5K distances, finisher medals for all and a custom long sleeve hoodie for 31K finishers. Aid stations, post race food and a limited shuttle for 31K runners are provided.
Trail races in Cool, California on March 6, 2027 offering a 50K and a 10 mile course with creek crossings, aid stations, timing and a post race party.
A fundraising nordic ski event at Tahoe Cross Country Center offering 26 km and 10 km loop courses, a Tour Wave option, and a postrace party supporting Tahoe Nordic Search & Rescue.
March 7, 2027 in Middletown CA: trail Half Marathon, 10K and 5K on a steep, scenic course with spring views and camping available.
Santa Barbara Nine Trails is a trail running event in Santa Barbara, CA on March 13, 2027, offering 35 mile and 17 mile race options organized by AllWeDoIsRun.
A series of road and trail races on Catalina Island around Avalon and Two Harbors, including a 26.2-mile trail marathon, 10K, 5K and a 1K kids run with island and ocean views.
Nine Trails in Santa Barbara, CA on March 13, 2027 offers 35 mile and 17 mile trail course options. The event is organized by AllWeDoIsRun, a member of national trail and running organizations.
A trail race weekend in Anza Borrego Desert State Park on March 13, 2027, offering 50K, marathon, and half marathon courses with aid stations and on-site campground facilities. Participants receive a tech shirt and a finisher medal.
Trail ultraruns of 50 Mile and 50K through Marin Headlands, Muir Woods and Mt. Tamalpais with significant elevation and coastal views.
A three day trail running weekend in Marin County offering a point to point 100K plus single loop 50K and 28K that summit Loma Alta and Big Rock Ridge.