Glendora
Trail Running Calendar near Glendora 2026-2027
Explore the top trail runs near Glendora for 2026-2027! We've gathered 37 exciting trail runs in the area. Check out our detailed list below to find your next local trail run.
September 2026
At U.S. Bank Tower participants climb 75 floors or take a self-guided urban hike to support Ketchum Downtown YMCA programs, then gather for a block party with music and food.
A chip timed 5K trail run and walk at Ascot Hills Park with city views, finisher shirt and medal, live results and community activities.
Trail ultras at Mt. Wilson in the Angeles National Forest offering 25K and 50K routes on technical single track with significant elevation gain and fully stocked aid stations.
October 2026
A 100 mile endurance trail race in the San Gabriel backcountry, scheduled October 3, 2026, using a lottery for entry and an out and back course from Loma Alta Park.
9.1 miles to the Mt San Antonio summit with 3,926 ft vertical gain on steep, exposed mountain trails; course capped at 500 entrants in Angeles National Forest.
Ruff Run California on 10/17/2026 in Phelan, CA presents a 20 acre obstacle course for people and their dogs with over 20 obstacles, 4K and 1K options, and an after party with music, games and vendors.
A 5K fundraising event in Los Angeles for Dyslexia Awareness Month with in-person and virtual options; proceeds support educational programs and resources.
November 2026
Experience California's premiere trail race with distances from 10k to a full marathon through the scenic Black Star Canyon and Cleveland National Forest.
Night trail races of 5K and 10K at Marvin Braude Mulholland Gateway Park in Tarzana, with required headlamps, marked courses, aid stations, and on-course medical support.
Sandy Sprint California is a charity 5K run/walk at Griffith Park on November 8, 2026, hosted by the Sandy Rollman Ovarian Cancer Foundation to raise funds for research.
Charity run in Griffith Park on 11/14/2026 with pet and human divisions; proceeds support Run for Paws, which helps dogs in need.
Trailsgiving at Elysian Park on November 14, 2026 offers 5k, 10k, 15k and half marathon trail routes on hard-packed dirt with marked out and back loops.
Friendsgiving fundraiser run at Whittier Narrows with 5k, 10k, 15k and half marathon out and back routes to benefit API Forward Movement.
An obstacle and mud focused 5K at Oak Canyon Park on Nov 21, 2026, featuring a course with mud pits and obstacles, pre race and finish festivals, and Value and VIP registration options.
Trail running event in Griffith Park on November 21, 2026 offering distances from 10K to 50K on singletrack and fire road.