Trail Running calendar near Bystrom 2026-2027

Test your endurance at Almaden Quicksilver County Park with 50 km or 100 km trail races. These USATF sanctioned events offer significant elevation gain and the 100 km distance serves as a Western States 100 qualifier.

Celebrate the 24th year of this community event in Los Altos Hills. Run or walk through the Westwind Community Barn and Byrne Preserve on hilly 5K, 10K, or 1 mile courses.

Experience the lush redwood landscapes of Saratoga at Trailquake 2026. Choose between 5K, 10K, or half marathon distances on forested trails with options to run, walk, or join remotely.

Celebrate Mother's Day on May 10th with a family-friendly run or walk. The event, held at Pinto Lake County Park, features a 1K kids run, 5K, and 10K. Your participation benefits Pajaro Valley Shelter Services.

A charity trail event at Skyline Ridge Open Space Preserve offering 50K, 30K and 10K options, with elevation profiles and route maps provided; all registration proceeds support UCSF cancer research.

Experience 360 degree views of the Bay Area at Wildcat 2026 in El Sobrante. This scenic event features a Half Marathon, 10K, and 5K as well as a remote participation option.

A 13 mile point to point trail race in San Jose across Almaden Quicksilver Park and Sierra Azul Open Space Preserve, with bus transport to the start and a 5.5 hour time limit. Race day registration and bib pick up are available.

Mud Factor Sacramento is a 5K mud and obstacle run at the 300 acre Mahon Ranch in Elk Grove on May 17, 2026. The event includes adult and KIDZ family waves, a festival area with paid spectator access, and required signed waivers.

A trail event on the El Dorado Trail in Placerville on May 23, 2026, offering distances from a kids run to a half marathon, paved and unpaved sections, aid stations, color-coded course markings, and medals for finishers.

Experience an obstacle course race through the rolling hills and wooded trails of Toro Park. Choose from 5K and 10K distances or bring the family for kids races at this scenic Northern California venue near Monterey Bay.

Experience trail running at Point Pinole Regional Shoreline Park in San Pablo. Choose between half marathon, 10K, or 5K distances on a historic site once home to TNT factories.

Experience a technical trail race through the redwood groves of Joaquin Miller and Redwood Regional parks. Choose from multiple distances ranging from an 8K to a 50K ultra marathon on accurately measured courses.

Experience a scenic run through Coyote Point Recreation Area with a 5K or 10K event supporting mental health. Enjoy a free community wellness fair featuring local health vendors and family friendly activities.

A multi-distance trail running event at Calero County Park on May 30, 2026, featuring single track, hills, aid stations, and a commemorative medal for finishers. Distances range from a Kids Run up to a 50K described as a Western States trai..

Trail races at Toro Park near Salinas on May 31, 2026 offer 10K, half marathon and marathon options on rocky trails and dirt roads. Average temp 16°C and average altitude 520 m; timing uses gun time.

Experience the natural beauty of the Sierra mountains on the Arnold Rim Trail with distances ranging from a 10K to a 22-mile point-to-point run. Join a community event at White Pines Lake that supports local trail maintenance and conservati..

Experience the historic trails of the Sierra National Forest in this annual event featuring 50k and 20k races. Enjoy well stocked aid stations and optional onsite dormitory lodging at Camp Green Meadows.

A community run and expo in San Francisco on June 6, 2026 featuring group runs of 3.2 miles and 4.5 miles, vendor booths, a pancake breakfast, and a raffle with prizes.

An annual trail race on the north shore of Lake Natoma in Fair Oaks offering 5K and 10K courses through wetlands, oak bluffs, and historic gold-dredge terrain, with proceeds supporting a local scholarship.

A trail event at Almaden-Quicksilver County Park on June 7, 2025 offering distances from 5K to 50K, steep climbs, marked courses, aid stations, and toilet facilities. The 52 mile race is not held in 2025 and is planned to return in 2026.