Trail Running calendar near Modesto 2025-2026

The 39th Golden Gate Park XC Open, held at Lindley Meadow (30th Ave & JFK Dr) in San Francisco's Golden Gate Park, is a 5k cross-country race over grass, dirt, and rolling hills. It features Masters Women 40+ and Masters Men 40+ along with Open Women and Open Men, and serves as the USATF Masters 5k..

ZombieRunner Halloween is held at Hellyer County Park (Buena Vista Pavilion) in San Jose, CA, along the Coyote Creek trail. The event features distances of 5K, 10K, Half Marathon, and Marathon, plus youth options: 5K for under 12, 5K and 10K for ages 13-17, and a free Kid's Run (6 and younger, 50 yd..

Rio Del Lago 100 Mile Endurance Run is a premier ultramarathon held at Beal’s Point in the Folsom Lake State Recreation Area, about 40 minutes east of Sacramento. The event features a 100‑mile race and a 50K endurance run, both looping from Beal’s Point toward Auburn and back along the American Rive..

Almaden Hills Trail Run - Fall takes place in Almaden Quicksilver Park in San Jose, California. The event offers multiple distances: 50K, Trail Marathon, 30K, Half Marathon, 8 Mile, 10K, and 5K, appealing to a wide range of runners. The course combines 60% dirt roads and 40% single-track trails, and..

The Oakland Tech 5km Fundraiser Race and 1 Mile Fun Run/Walk takes place at Joaquin Miller Park Meadow in Oakland, California. This event features a 5K trail run and a 1-mile fun run/walk, offering participants scenic views with towering trees and a course that is both enjoyable for casual runners a..

NorCal Backyard Ultra returns to Beals Point at Folsom Lake, near Granite Bay, CA, for its third edition. Two formats: Last Person Standing (4.2-mile loop, hourly until one remains) and Mini Last Person Standing (24 hours). The scenic course runs on rolling singletrack with lakefront views.No on-cou..

Lake Chabot Trail Run is a multi-distance trail race held at Lake Chabot Regional Park – Marina in Castro Valley, CA. The event offers 8K, Half Marathon, 30K, Marathon, 50K, and a Kids Run, inviting runners of varied backgrounds. The course starts at the Marina and loops around the Lake Chabot reser..

The Rancho Hills Trail Run - Fall is a challenging trail running event held at the Rancho Cañada del Oro Open Space Preserve in Morgan Hill, California. The race offers a variety of distances ranging from 5K to 50K, including 8-mile, 10-mile, half marathon, 30K, and trail marathon options. The cours..

Mermaid Trail Run - Woodside takes place at Huddart Park in Woodside, CA. The event offers multiple distances: 3, 6, and 9 miles, a Half Marathon, a 6 Hour Challenge for individuals or two-person relays, a Virtual Run, and a Mermaid Dash for kids ages 6-12 (1 mile). The course winds through towering..

The Ripon Turkey Trail Run is a community-focused running event held in Ripon, California, at Mavis Stouffer Park along the Stanislaus River Trail. Scheduled for November 15, 2025, the race offers three distance options: 5K, 10K, and a half marathon (13.1 miles). Participants receive a custom techni..

Falcon Crest Winter Trail Challenge takes place in the foothills of El Dorado Hills, California, at the Falcon Crest Parking Lot / Monte Vista Trailhead near Folsom Lake. The event offers six distances: 5K, 10K, 15K, half marathon, 30K, and a trail marathon. Runners navigate dirt and rocks on mostly..

The Golden Gate Trail Classic will take place in San Francisco from Saturday 22 November 2025 to Sunday 23 November 2025. You can run between 15 and 50 miles.

The Zoom Turkey Trot is a Thanksgiving Day running event held at Hellyer County Park in San Jose, California. It offers multiple race distances including 5K, 10K, and a USATF-certified half marathon, with additional age-specific categories and a free 50-yard dash for kids six and under. The courses..

The Wild Turkey is a Thanksgiving morning trail race in Granite Bay, California, held at the Beals Point area along Folsom Lake (9704 Auburn Folsom Rd). It offers 5k and 10k trail courses and a free 1-kilometer kids run. The event emphasizes family fun and community support, benefiting Folsom’s Hope..

Quarry Turkey 2025 takes place at Quarry Lakes Regional Recreation Area in Fremont, California, on the Saturday after Thanksgiving. The event offers a fast, mostly-flat course on Quarry Lakes trails with options for a half marathon, 10K, or 5K, plus a free Little Turkeys Run for children (about 100..

The Krampus Cross Country is a festive running event held in San Francisco, California, featuring live and virtual options. Participants can choose from three distances: a 5K, 10K, or the challenging Naughty Nine Miler. The live races start at the Ecology Trail Head at the end of Barnard Avenue, wit..

The Calero Trail Run - Winter is a versatile trail running event held at Calero County Park in San Jose, California. It offers a range of distances including a 50K, trail marathon, 25K, half marathon, 15K, 10K, 5K, mile, and a kids run, catering to all levels of runners. The course features scenic s..

ZombieRunner Quarry Lakes takes place on Saturday, December 6, 2025, in Fremont, CA at Quarry Lakes Regional Recreation Area (Ensenada Pavilion). The event includes multiple distance options: 5K 10K Half Marathon 30K Marathon 5K (12 yo & under) 5K (13 - 17 yo) 10K (12 yo & under) 10K (13 -..

Folsom Lake Point to Point Trail Half Marathon is a 13.1-mile trail race held in El Dorado Hills, California, along the south shore of Folsom Lake. The course is predominantly single-track (about 95%) with some dirt-road sections, featuring rolling hills, technical segments, and scenic views of Fols..

Summit Rock is Brazen Racing’s trail event held in the redwood and pine forests of Sanborn County Park, just outside Silicon Valley in Saratoga, California. Runners can choose from a 5K, 10K, or half-marathon, all on miles of single-track trails through the Santa Cruz Mountains. The course features..