Trail Running Calendar California 2025-2026

Stevens Creek Striders Reservoir Run at Stevens Creek County Park in Cupertino, CA offers a Half Marathon (13.2 mi), an 11K (6.8 mi), and a 2.5‑mile Lollipop Loop along Stevens Creek and the reservoir. Runners navigate shaded Tony Look single-track and open Coyote Ridge vistas, with ascents on the h..

Noble Canyon 50K/15K is an ultramarathon set in the mountains east of San Diego, California, near Pine Valley. The event offers two distances—50K and 15K—run on National Forest land. The course is described as mostly runnable single-track, delivering rugged terrain, spectacular mountain views, and a..

Tanri Lake Race takes place in Miramonte, California, at about 6,000 feet elevation. The event offers two formats built on 5-mile laps: a relay for teams of three, where each runner completes four laps in order; and an individual race, where runners complete as many laps as possible in a 10-hour win..

The Mendocino Running Festival, held in Mendocino Woodlands Park, California, offers a unique running experience amidst ancient redwoods and scenic trails. Participants can choose from a 10K, half marathon, or timed 6- and 12-hour races on a challenging 6-mile loop featuring 875 feet of elevation ga..

Diablo Trail Run takes place at Mount Diablo State Park, Mitchell Canyon Trailhead in Clayton, California. The event offers 4-mile, 10-mile, half marathon, marathon, 50K, and a Kids’ Run (50-yard dash). The 4-mile course is relatively flat, while the longer distances traverse mountainous, scenic ter..

Skybreaker Racing’s Mammoth Bar Trail Runs take place in the Mammoth Bar OHV Area within the Auburn State Recreation Area, near Auburn, California. The event offers three distances: Half Marathon, 10K, and 5K, designed for a high-vertical, rugged trail experience. Participants can expect steep climb..

Berkeley Trail Adventure takes place in the East Bay’s Tilden Regional Park and Wildcat Canyon, Berkeley, CA. The race offers four distances: 10K, Half Marathon, 35K, and 50K, with elevation gains from about 1,050 to 6,800 feet. Most of the course runs on technical dirt trails and non-technical fire..

The Freedom Running Last Man Standing - Hanford will take place in Hanford on Saturday 13 September 2025.

South Hills Single Track Trail Run takes place at Calero County Park in San Jose, California. The event offers a full slate of distances: 1 mile kids run, 5K, 10K, 9 mile, half marathon, 16 mile, trail marathon, and 50K. The course blends single-track trails and dirt roads, showcasing oak trees, hil..

Pincushion Hill Climb takes place in Friant, California, near Millerton Lake. It features two events: a 1‑mile hill climb and the Mountain Goat edition. The 1‑mile race is a straight ascent starting at the San Joaquin River Trailhead in the South Finegold Picnic Area and finishing at the top of Pinc..

Garin Park XC Challenge 2025, held at Garin/Dry Creek Pioneer Regional Parks on Garin Avenue in Hayward, California, is a 5K cross-country race described as a tough yet scenic run along the Garin Park ridge. Now in its 21st year, the event is part of the Pacific Association of USA Track & Field Cros..

The Freedom Running Last Man Standing will take place in Clovis on Saturday 13 September 2025.

Totally 80's Fast Times in Huntington Beach, organized by CaliFlow Runs, offers a throwback festival-style race weekend at Bolsa Chica State Beach (Lot 25) in Huntington Beach, CA. The event features three distances—5K, 10K, and Half Marathon—plus a Kids Dash. Runners enjoy a flat, scenic, car-free..

Kiwanis River Run takes place at George’s River Ranch in Fresno, CA, offering four distances: 10K Trail Run, 5K Run/Walk, 2-Mile Fun Run/Walk, and Kids 1/4 Mile Fun Run. The course features three scenic, river-side off-road routes along the San Joaquin River, set beneath trees with birdsong. The eve..

Kiwanis River Run is held at George’s River Ranch on CA-41 in Fresno, California, along the San Joaquin River. The event offers four distances: 10K Trail Run, 5K Run/Walk, 2-Mile Fun Run/Walk, and a Kids 1/4 Mile Fun Run for ages 10 and under. Runners traverse three scenic off-road routes along the..

Double Peak Challenge is an outdoor trail race in San Marcos, California, offering a 10K competitive option, a 5K Fun Run, and a Kids Trail Trot. The course starts at the San Elijo Recreation Center and climbs to Double Peak Summit, delivering about 1,176 feet of elevation gain to reach 1,558 feet a..

The Great American Pizza Run takes place in Long Beach, California, at 5400 E Ocean Blvd, offering multiple pizza-themed distances: 5K (The Fast Slice), 10K (The Deep Dish Dash), Half Marathon (The Full Pie Half), 1-Miler (The Cheesy Mile), and a Kids Dash (The Little Mozzarella Sprint). The course..

Gold Rush Growler Trail Runs at Granite Beach, Folsom Lake SRA, offer a 10-mile trail run and a 5K along the shoreline and trails. For 2025, the courses are new: the 5K starts at Granite Beach, to Oak Point and Old County, then returns on new and old trails; the 10-mile route starts at South Granite..

Rocky Ridge in the Las Trampas Wilderness near San Ramon, California offers a challenging trail experience for three distances: half marathon, 10K, and 5K. The course climbs into the ridges with hills and rugged trails, rewarding runners with rarely-seen vistas and a lasting sense of accomplishment...

Rebels XC Challenge is a cross-country running meet held in Carmichael, California, at 6700 Tarshes Drive. The event is scheduled for September 20, 2025, and offers three divisions: Women’s Race, Masters Men, and Open Men. Distances are not listed on the page, and course specifics aren’t described,..