Monrovia
Trail Running Calendar near Monrovia 2026-2027
Explore the top trail runs near Monrovia for 2026-2027! We've gathered 34 exciting trail runs in the area. Check out our detailed list below to find your next local trail run.
August 2026
A 5k trail run at Red Rock Wilderness near Silverado, CA featuring fire roads and single track, 300 feet of climbing, one aid station, a cupless policy, and no pets allowed.
A free community run and expo in Los Angeles on August 29, 2026, featuring a 4 mile trail run, brand booths, a raffle and local vendors.
September 2026
A community event in Norwalk on September 5, 2026 featuring a 3 mile in-person and virtual run, a youth sprint and a high school invitational.
The 61st Mt Baldy Run to the Top on September 7, 2026 is a fundraising mountain trail race in the Angeles National Forest covering about 7 miles with 4,000 feet of ascent to the 10,064 foot summit, with proceeds aiding local services.
A Stadion obstacle race at Angel Stadium of Anaheim on September 12, 2026, featuring a 5 km course with 20 obstacles plus a kids race and spectator options.
Evening trail relay and 5K at Griffith Park featuring team relays, a 1K kid run, live music, golden hour photos, medals, and awards.
An urban event in downtown Los Angeles with a stair climb up 1,664 steps at the U.S. Bank Tower, an Urban Hike past major cultural sites, a Heroes Challenge category, and a virtual participation option.
A chip timed 5K trail run and walk at Ascot Hills Park with city views, finisher shirt and medal, live results and community activities.
25K and 50K trail ultras on Mt. Wilson in the Angeles National Forest, featuring technical single track, regular aid stations, and significant elevation gain.
A themed Long Beach running event on September 27, 2026, offering 400 yd kids dash, 1 mile family run, 5K, 10K, half marathon, chip timing and finish line pizza.
October 2026
An annual 100 mile ultramarathon through the San Gabriel backcountry, held since 1986; the 2026 edition uses 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.
November 2026
Night trail races of 5K and 10K at Marvin Braude Mulholland Gateway Park in Tarzana, CA with marked fire road courses and a required headlamp.
Trailsgiving in Elysian Park offers 5k, 10k, 15k and a half marathon on marked out and back trail loops with on course aid and finisher medals.
A Whittier Narrows road and trail event on November 15, 2026 offering 5k, 10k, 15k and half marathon distances with marked out and back loops and on-course aid.