Trail Running calendar near Riverbank 2026-2027

Trail races on May 31, 2026 in Arnold, CA offer distances from 5k to a new 50k ultra across the Arnold Rim Trail and White Pines Lake Park, with proceeds supporting the Arnold Rim Trail Association.

A one-day festival in Berkeley on May 31 featuring free road and trail runs, demo shoes from major brands, a $10,000-plus raffle, food and beer, and fundraising for youth running in Oakland.

A trail event near Yosemite offering a **50k** and a **20k Fun Run**, with staffed aid stations, camp lodging, a preordered pre-race dinner, and finisher medals for finishers.

Trail races of 5K and 10K along wetlands, oak bluffs and historic rock-dredge terrain on the north shore of Lake Natoma. Entry fees vary by date and proceeds benefit the Rachel Anne Gray Memorial 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.

Scenic trail runs on the north shore of Lake Natoma in Fair Oaks with 5K, 10K and a kids run under 10. Hosted by the Fair Oaks Recreation & Park District, proceeds benefit the Rachel Anne Gray Memorial Scholarship.

A monthly community hike with an optional trail run pace at 5551 Giant Highway in Richmond, CA. Organized by FIERCE Advocates with Moving Forward and Richmond Run Club, the series runs on first Saturdays in 2026 and shares route details bef..

Experience the 42nd annual Lake Chabot Trail Challenge featuring a scenic half marathon loop and a paved 5K run. Enjoy views of the San Francisco Bay and Mt Diablo while competing for medals on chip timed courses.

A point-to-point 100-mile ultramarathon from UC Berkeley to Skyline High School in Oakland, featuring about 18,000 ft of elevation across ridgelines, redwood forest and lake trails; the 2026 race is sold out with a waitlist.

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.

Annual 5K and 10K fun run and walk each June at Hunting Hollow in Henry W. Coe State Park. The relatively flat dirt course runs through a wildflower-lined valley with oak trees and occasional wildlife, with proceeds supporting park projects..

A 5K run and walk on the trails of the Cosumnes River Preserve in Galt, CA, offered as an in-person outdoor event on June 13, 2026. The listing notes an overall duration of about three hours and free online ticket availability.

Live and virtual options at Lake Chabot feature 5K, 10K, and a half marathon with multiple aid stations, on-course nutrition, race apparel and a woodallion, post-race beverages, and a brewfest atmosphere.

A 10-mile trail race in Redwood Regional Park with single-track terrain, a timed 0.8 mile hill climb, age-based handicap starts, limited to 250 runners, and a team competition.

Multi-day trail runs in Yosemite high country offering summit routes (El Capitan, North Dome, Cloud's Rest), point-to-point mileage across 40-98 miles, glamp-style basecamp at Tioga Pass, guided shuttles, meals, and permit logistics include..

A community Independence Day event at Sycamore Grove Park featuring a flat 5K on mixed paved and dirt trails and a 400 meter kids run for ages 10 and under. T shirts are included with race fees.

Multiple trail distances from 5K to 50K on very hilly single track and dirt roads at Rancho Cañada del Oro. The course features scenic foothill views, two aid stations, enforced cutoffs, and finishers receive a medal.

Timed trail races at Point Pinole on July 25, 2026 offer 12 hour, 6 hour and 3 hour formats on a 3.37 mile loop with shoreline views and eucalyptus groves. Solo runners and two or three person teams are accepted, and entry includes an all d..

Trail running at Calero County Park with multiple distances across single track and dirt paths, significant climbs, aid stations and free parking at the park.

A historic trail 50K and half marathon around Lake Chabot in Castro Valley, featuring a large loop through East Bay Regional Parks with substantial climbing. Finishers receive a shirt, socks, and a medal, and podium awards are presented.