Trail Running Calendar California 2025-2026

Mile Madness returns Oct 10 to 13, 2025 at Sunset Whitney Recreation Area in Rocklin CA, with 6, 12, 24, 48 and 72 hour events plus a 100 mile plus challenge on a fast 1.07 mile loop. Join a spirited community chasing buckles and big person..

Located in Big Bear Lake, California, HOKA Kodiak Ultra Marathons by UTMB offers a two-day festival vibe in a rustic mountain town near Los Angeles. The event features five races: 100M (160 km, 5200 m gain), 100K (100 km, 3050 m), 50K (50 k..

Run the scenic Bizz Johnson Trail in Susanville, California on October 11 and 12, 2025 with 50K, marathon, half, express half and 10K options. Expect forest singletrack, historic tunnels, wooden bridge crossings and a fast descent to Hobo C..

The Rock It in Chino Hills 5K & 10K is a trail running and hiking event held at Chino Hills State Park in Brea, California. Participants can choose between a 5K or 10K course that showcases the park's stunning and expansive trails, offering..

Push your limits on Napa Lapa Trail at Skyline Wilderness Park with timed 3, 6 and 12 hour events plus a 12 hour relay. Expect rugged climbs, scenic singletrack, chip timing and finisher medals in a festive limited field experience.

Join the Ruth Anderson Memorial Endurance Run in San Francisco on October 11, 2025 for challenging looped ultramarathon distances. Choose from 100 km, 50 miles or 50 km on scenic Lake Merced loops with aid each circuit and chip timing.

Event overview Granite Head Trails & Ales is a trail running event on Saturday, October 11, 2025, in Granite Bay, California. Both race courses start and finish at Granite Beach. The event is presented by Altra and the local contact is..

Explore Tiburon Peninsula trails at Go Wild! Marin in Corte Madera on October 11. Pick a 2 Hr or 4 Hr solo or team map run to find up to 24 checkpoints, then relax with refreshments and socializing.

Live Oak Odyssey at O'Neill Regional Park is a fixed time trail run with 3 Hour and 6 Hour loop options on oak studded single track. Expect challenging climbs, stocked aid station, chip timing and finisher awards for a fun day on the trails..

Event details The Mt. Umunhum Trail Conquest - Fall takes place at Almaden Quicksilver County Park, Hacienda Entrance, 21785 Almaden Rd, San Jose, CA 95120. The event offers multiple trail distances: 50K Trail Marathon 30K Half Marathon 7..

Event information Euchre Bar Massacre takes place on October 11, 2025, near Foresthill, California. The event is free to enter and registration is limited to 50 people total. Registration closes October 10, 2025. The organizer maintains a w..

Event overview The Carmel Valley Trail Race takes place on October 11, 2025, at Gonzales Canyon Open Space in Carmel Valley, San Diego. The 12th annual event starts and finishes at Solana Ranch Park on the east end of Gonzales Canyon, with..

Event overview The event is three cross-country races held at Miwok Meadows in China Camp State Park, San Rafael, CA. The races are run as a memorial to a Tamalpa Runner who died in 2000. Each race uses the same course as in 2024 and is rou..

Vampire Run - Unite for Bleeding Disorders is held in Roseville, CA, at Vernon Street Town Square in Downtown Roseville. It features a first-ever 5K on the Roseville trails, offered as a timed run with adult 5K and child 5K (under 14) and a..

Champion Mine Trail Race is held in Nevada City, California, featuring two events: a half marathon (13.1 miles) and a 5K Fun & Fitness Run/Walk. The inaugural race from the Bear Yuba Land Trust and Sierra TrailBlazers uses a dynamic mix of..

Run through history at the California Gold Rush Trail Run in Coloma's Marshall Gold Discovery State Historic Park, with distances from a kids run to a half marathon on scenic singletrack. Medals for 5K and up and race day sign up.

Lake Hodges Trail Festival is an annual trail-running weekend at the Piedras Pintadas Trailhead near Lake Hodges in San Diego County, and is part of the Elevation Culture Race Series. The festival offers multiple distances: 50K, 25K, 15K, 1..

The California Fall Classic at Lake Sonoma offers challenging 100K and 55K ultramarathon races set in the scenic wine country of Lake Sonoma, California. Known for its relentless courses featuring miles of single-track trails with stunning..

The Jackalope Lope : Oct 18, 2025 The Jackalope Lope is a trail running event at Brandy Creek Beach in Whiskeytown National Recreation Area, near Redding, California. Distances offered include: 50K about 20.5 miles about 8.5 miles Course..

Event overview The Diablo Summit Stomp takes place on October 18, 2025, at Castle Rock Park / Mount Diablo State Park in Walnut Creek, California. The event offers four trail distances: 30K Half Marathon 10K 5K Walkers and hikers are allo..