Crestline
Trail Running Calendar near Crestline 2026-2027
Explore the top trail runs near Crestline for 2026-2027! We've gathered 16 exciting trail runs in the area. Check out our detailed list below to find your next local trail run.
September 2026
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.
A two day mountain trail festival in Big Bear Lake offering five distances from 10K to 100M, varied terrain, and UTMB World Series Major status.
Annual mud run in San Bernardino with a 5K for individuals and teams and a 1K kids race on October 10, 2026.
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.
Wildwood Canyon Trail Run in Yucaipa, CA on October 24, 2026 offers an 8-hour loop challenge and a 6K on a 3.7 mile course with about 600 ft gain per loop.
November 2026
December 2026
A nighttime Last Person Standing event in Yucaipa where runners repeat a 4.167 mile loop each hour until one person remains; limited camping is available.
January 2027
A 24 hour loop race in Perris, CA featuring the Molcajete loop, with individual and four person team options and awards for top finishers.
April 2027
A 24-hour timed trail race in Big Bear on an approximately 5-mile loop, featuring on-course aid, a 100-mile Burro Hundred challenge, and community trail stewardship.
May 2027
High-altitude Spartan weekend at Big Bear Mountain Resort with Sprint, Super, Beast and kids obstacle races plus a Trifecta option.
Scenic Trail 10K at Big Bear Mountain Resort with high altitude pine singletrack, technical climbs and wide views of the Southern Sierra.
August 2027
Mountain road and trail races at Green Valley Lake offering 5K, 10K and half marathon courses with aid stations, chip timing, and post-race community activities.