Trail Running calendar near Tracy 2026-2027

The Bay Area 100 is a 100 mile point to point ultramarathon across Berkeley and Oakland ridgelines and redwood forests. With about 18,000 feet of climbing and a finish on the Skyline High School track, it offers a rugged, scenic test.

Rock the Loch offers 5K, 10K and half marathon around Lake Chabot with scenic but challenging trails. Live and virtual entries include a tech shirt, wooden medallion, post race snacks and a brewfest.

Run through coastal redwoods and riverside canyons in Santa Cruz with distances from 10K to 50K and a free kids run. Pre registered runners get shirts and all finishers earn a custom medal on scenic single track trails with full aid.

Skyline 50K runs August 2, 2026 at Lake Chabot Marina in Castro Valley, featuring a scenic loop through East Bay Regional Parks. One of the nation's oldest 50K races, it welcomes first time ultrarunners and includes a half marathon option.

Run among towering redwoods in Oakland on August 15 at the Redwood Summer Trail Run, with distances from a 5 mile to an epic 50K plus a free kids dash. Expect stocked aid stations, finish medals and classic trail vibes.

Run scenic single track through Huddart Park, King's Mountain and Bear Gulch with options from 8K up to 50K, plus a free kids dash. Fully stocked aid stations and classic California trail views make for an unforgettable day on the trails.

Run the scenic trails of Mount Diablo with distances from 4 miles to 50K, featuring sweeping Bay Area views. Fully stocked aid stations, chip timing, and a cupless format make this a true trail adventure for every runner.

Run the Gold Rush Growler Trail Runs on September 19, 2026 at Granite Beach for scenic shoreline and single track trails with 5K and 10 mile options. Finishers receive a commemorative beer glass and ages 21 and up can enjoy a local IPA at t..

Experience challenging trails around Lake Chabot on September 26, 2026 with races from a 100k to a marathon, including a 50 mile USATF Grand Prix event. Enjoy scenic singletrack, supportive aid stations, and memorable finishers awards.

Run by the Sea returns Sunday, October 4, 2026 at Wilder Ranch State Park in Santa Cruz with 4K, 12K and a half marathon on scenic coastal trails. Now in its 101st year, this charity race supports local youth and trail groups.

Run the 39th Ruth Anderson Memorial Endurance Run on October 10, 2026 in San Francisco. Choose 100 km, 50 miles, or 50 km on a scenic paved loop around Lake Merced with chip timing and certified 50K and 50 mile courses.

Run through oak forests, granite boulders and fall foliage along scenic trails by Folsom Lake at Granite Head Trails and Ales. Pick 6.6 or 11.45 mile courses and celebrate with a finisher medal, tech shirt, beer and fajitas.

Join ZombieRunner Halloween at Hellyer County Park in San Jose on Oct 31 for races from kids dashes to a USATF certified half and marathon. Scenic Coyote Creek trails, festive costumes, shirts and finisher medals make it a fun holiday run.

Celebrate the 25th Rio Del Lago with a rugged 100 mile loop around Folsom Lake or a spirited 50K on scenic single track and river trails. Expect big climbs, iconic views and well stocked aid stations.

Enjoy a scenic but hilly trail run at Huddart Park with distances from 3 mile to half marathon, plus a 6 hour challenge and youth dash. Stay for pancakes after the race and choose a virtual option for 5K, 10K or half marathon.

Celebrate Thanksgiving at the Zoom Turkey Trot in Hellyer County Park, San Jose with family friendly distances from a free kids dash to a USATF certified half marathon. Park entry is included and every finisher earns a medal.

Join the festive Krampus Cross Country in San Francisco with live and virtual options Dec 4 to 7 and the in person race on Dec 6. Pick 5K, 10K or the Naughty Nine Miler and take home a woodallion, tee and beer sampler stein.