Trail Running calendar near Lafayette 2025-2026

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..

Quad Dipsea is an ultramarathon held in Mill Valley, California, starting at Old Mill Park. The event features four grueling laps along the Dipsea Trail to Stinson Beach and back, totaling roughly 28 miles with about 9,000 feet of elevation gain. Runners confront famous climbs and rugged terrain, in..

Quarry Turkey, held at Quarry Lakes Regional Recreation Area in Fremont, California, is Brazen Racing’s Thanksgiving weekend event featuring a fast, mostly-flat half marathon, 10K, and 5K through scenic Quarry Lakes trails. It welcomes walkers and families for a festive, turkey-themed atmosphere, wi..

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 -..

The Peacock Gap Trail Run is scheduled for Saturday, December 6, 2025, at China Camp State Park and Harry Barbier Memorial Park in San Rafael, CA. The event offers three distances: 30K - 19.5 miles, 2,735 ft elevation gain Half Marathon - 13.1 miles, 1,800 ft elevation gain 10K - 6.3 miles, 1,140..

Hunter S. Thompson Fear & Loathing in San Francisco is an urban ultramarathon offering 50K or 50 miles. Located in San Francisco, the single-loop course starts and finishes atop Twin Peaks, with the city spread out beneath.The 50K route is about 99% city streets; the 50-mile option includes some tra..

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..

2025 Hark the Herald Half Marathon & 10K, the 37th annual edition, takes place at Angel Island State Park, Belvedere Tiburon, California. The Half Marathon is two loops on a hilly trail; the 10K is a single loop. The event is limited to 400 participants, creating an intimate atmosphere with panorami..

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..

Woodside Ramble is a multi-distance trail race on the San Francisco Peninsula, centered at Huddart County Park in Woodside, CA. Distances include 10K, half marathon (13.2 miles), 35K, and 50K. The course threads through Huddart and Wunderlich Parks, along streams beneath towering redwoods, then clim..

Brazen Racing’s Almost New Year’s Eve is a trail-running event at Lake Chabot in Castro Valley, California. Runners may choose from a Half Marathon, 10K, or 5K, with hikers and walkers welcome. The race navigates Lake Chabot’s scenic trails, delivering a festive, outdoor atmosphere as participants c..

Brazen New Year's Day 2026 takes place at Lake Chabot in Castro Valley, California. Runners can choose from a half marathon, 10K, or 5K on Lake Chabot’s scenic trails. The course loops around the lake and is described as scenic and invigorating, offering a family-friendly atmosphere as participants..

The Hacienda Hills Trail Run - Winter is a trail running event held at Almaden Quicksilver County Park near San Jose, California. It offers nine race distances ranging from a Kids Run and 1 Mile to challenging 50K and Marathon options, all featuring increasing elevation gain through scenic Northern..

Hope in Every Step 5K takes place on January 10, 2026 in Modesto, California. The event is a 5K run/walk on a 3.1-mile course using the trails at East La Loma Park, located at 2001 Edgebrook Drive, Modesto, CA 95355. Proceeds and donations from the event will benefit the Sutter Pediatrics Departmen..

The Crystal Springs Trail Run takes place on Sunday, January 18, 2026, at Huddart Park (Werder Shelter), 1100 Kings Mountain Road, Woodside, CA 94062. The event offers the following distances: 8K - Elevation gain 710'; Single Track 48%, Dirt Road 40%, Asphalt 12% Half Marathon - Elevation gain 2,1..

The Crystal Springs Trail Run takes place at Huddart Park (Werder Shelter), 1100 Kings Mountain Road, Woodside, CA. The event includes the following distances: 8K Half Marathon 35K Marathon 50K Kid's Run (6yo & younger, 50 yd dash) - Free Race-day check-in begins at 7:00 a.m. at Huddart Park..

Folsom Lake Sweetwater Trail Run takes place at Folsom Lake State Recreation Area, Salmon Falls Parking Lot in El Dorado Hills, California. The event offers eight distances: Kids Run, 1 mile, 5K, 10K, 9 Mile, Half Marathon, 30K, Trail Marathon, and 50K. The course is 95% single-track with 5% dirt ro..

The Pacifica Foothills Trail Run is scheduled for January 24, 2026 at San Pedro Valley County Park in Pacifica, California. The event offers three distances: 30K - 18.9 miles, 4,300 ft elevation gain Half Marathon - 13.2 miles, 3,100 ft elevation gain 10K - 6.0 miles, 1,200 ft elevation gain The..