Trail Running calendar near Martinez 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..

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.

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 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..

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.

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.

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..

Event overview The 16th annual Willow Hills XC Open is scheduled for Saturday, October 18, 2025. The event is part of the Pacific Association USATF Cross Country Grand Prix. Races are held at Willow Hill Reservoir Community Park next to Fol..

Event overview The California Fall Classic at Lake Sonoma is a trail ultramarathon held at Lake Sonoma near Healdsburg, California on October 18, 2025. The event offers two distances: 100K 55K The 100K is a Western States Endurance Run qu..

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..

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..

The Running Dead 5K Fun Run in Union City, California, is a Halloween-themed community race at Civic Center/City Hall (34009 Alvarado-Niles Road). It offers a 5K open to adults and a 5K Youth option for younger runners. The course follows t..

The 27th Annual Matt Yeo Memorial Aggie XC Open, presented by the HOKA Aggies, is held at Radke Martinez Regional Shoreline in Martinez, California. The meet features three 4.1-mile cross-country races for Women, Masters Men, and Open Men,..

Join the Quicksilver Trail Challenge at Almaden Quicksilver County Park in San Jose on Oct 25, 2025. Pick a scenic half marathon, 10K, or free kids one mile and explore single track trails with sweeping Mt Umunhum views.

Event overview The Haunted Hills 5K & 10K is a Halloween-themed walking and running event in Redwood City, CA, on October 25, 2025. It is organized as a trick-or-treat style course for adults and families. Participants form teams of 1 t..

Event details The 2025 Napa Fall Wine Country race is the 33rd annual trail event at Bothe-Napa Valley State Park in Saint Helena, California. It is scheduled for October 25, 2025 and is limited to 300 participants. Distances offered: Mara..

Wise Villa Fall Harvest Run is a 5k chip-timed race/walk staged at Wise Villa Winery in Lincoln, California. The two-loop course starts and finishes at the winery, winding through the property with spectacular views; the route is described..

Challenge Oakland's Redwood Regional Park trails on October 25, 2025 with options from 10K to a rugged 35K through scenic singletrack and fire roads. Chip timed event, cupless so bring a bottle, and finisher medals.

Take on Rio Del Lago on November 1, 2025 at Beal's Point in Folsom Lake, with 100 mile and 50K options across scenic Sierra foothills. The 100 mile is a 2026 Western States qualifier and rewards finishers with memorable swag and epic views.