Trail Running calendar near Auburn 2026-2027

A timed half marathon on 9 May 2026 from Quintessa Winery to Yountville in Napa Valley. The finish line Wine Village features live music, Domaine Chandon welcome bubbles and complimentary tastings from multiple wineries.

A spring trail race in Cool presented by Altra, Dirty Secret offers two single-track courses through meadows, hills and a creek crossing. The event is limited to 600 runners and includes a tech shirt and finisher medal.

Trail races from 5K to 50K around Jenkinson Lake on May 9, 2026, with a 100 runner daily cap. Parking and registration are at the Scales Parking Lot; most distances finish at the Waterfall Trailhead and a $5 day use fee applies.

Trail runs at Skyline Wilderness Park in Napa offer distances from 10K to 50K with steep Rim Rock climbs and valley views. Aid is touchless and parking is included with registration.

An inaugural trail ultramarathon in Napa offering a 50 mile solo and a two-person 50 mile relay over two long loops through Skyline Wilderness Park and Suscol Headwaters, run as a cupless event with four aid stations and limited crew access..

A spring running event in Roseville on May 16, 2026 offering a half marathon plus a 5K run and a noncompetitive 5K walk, all on paved local trails with aid stations and participant swag.

Mud Factor Sacramento is a 5K mud and obstacle run on May 17, 2026 at the 300-acre Mahon Ranch, marking the event's 15th anniversary; it features adult and KIDZ family waves and a $10 spectator festival pass.

Experience the final 70 miles of the Western States trail during this three day training event featuring supported runs of 19, 20, and 32 miles through iconic canyon terrain and mountain climbs.

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.

A dog friendly 5K and 1 mile event at North Tahoe Regional Park with an expo, non competitive activities, and a fundraiser supporting local animal rescue and veterinary care.

A trail running event in Arnold, California on May 31, 2026 offering distances from 50k to 5k around White Pines Lake and the Arnold Rim Trail, with proceeds supporting the Arnold Rim Trail Association.

A 10km trail run on the Olmsted Loop at Auburn State Recreation Area in Cool, California on June 6, 2026. The race takes place the same day as the Coolest Ride and Tie and Equathon events.

The Cool Summer Night Run will take place in Cool on Saturday 6 June 2026. You can run 10 kilometers.

Trail races on the north shore of Lake Natoma in Fair Oaks with 5K and 10K courses through oak bluffs, wetlands, and historic dredge terrain. Proceeds benefit the Rachel Anne Gray Memorial Scholarship.

Lake Natoma Trail Run in Fair Oaks, CA on June 6, 2026 features 5K and 10K trail courses plus a kids run for under-10s. The route follows wetlands, oak and single-track trails on the north shore of Lake Natoma and supports a local scholarsh..

A 200 mile trail race around Lake Tahoe on sections of the Tahoe Rim Trail, featuring lake views, aspen meadows, rock gardens, small alpine lakes and long ridgelines. The event dates are June 12–16, 2026.

Multiple trail distances take place on two scenic loops near Cool, California on June 13-14, 2026, with live tracking and chip timing. Routes combine single track and fire roads and range from a 5K up to 100K.

A 100 mile looped trail ultramarathon near Cool, California covering alternating 13.5 mile and 11.5 mile loops, with live tracking, timed cutoffs, aid stations, and finisher buckle, shirt, and medal.

Three distances start and finish at the Village at Palisades Tahoe with scenic out and back courses along paved trails by the Truckee River. Aid stations, race shirt, finisher medal, free photo, and beer for participants 21 years or older.

Trail races of 30K, 10K, 5K and a Kids 1K take place at Lagoon Valley Park in Vacaville. Courses are marked and supported with aid stations offering drinks and snacks.