Trail Running calendar near Green Valley Lake 2025-2026

Run a 5K, 10K or Half Marathon around scenic Green Valley Lake, tackling a lake loop and a challenging climb to forest viewpoints on mixed paved and dirt roads. Enjoy post race festivities while supporting The Children’s Forest.

Riley Park Trail Races on August 1, 2026 at Thomas F Riley Wilderness Park feature a 3.3 mile loop with distances from 5k to 30k plus a 6 hour challenge. Every finisher receives a race shirt and medal and the course welcomes all paces.

Race the Los Angeles Sunset Trail Relay in Griffith Park with team relays, a 5K and kids run on scenic trails that showcase views of the LA River and Glendale. Enjoy live music, medals, finisher snacks and a festive finish line atmosphere.

Run the Ascot Hills Challenge 5K on scenic trails above East Los Angeles with sweeping views of Dodger Stadium and the Hollywood sign. Proceeds benefit Wilson High School fire and police cadet programs and help preserve Ascot Hills Park.

The Angeles Crest 100 is a classic 100 mile point to point mountain ultramarathon across the San Gabriel Mountains with over 21,000 feet of climbing. Held Oct 3, 2026 from Wrightwood to Altadena, entry is by lottery.

Run a Native organized fundraiser on the Cahuilla Reservation in Anza supporting youth and family programs. Choose from 100 mile, fixed time races and shorter distances on a runnable 2 mile dirt loop with handcrafted awards and buckles.

Test your limits at SPACEROCK in Vasquez Rocks on October 17, 2026 with looped trail options from 5K to a Half Marathon+ just under 14 miles and 3,200 feet of climbing. Expect rocky single track, a 500 foot Black Hole tunnel and cupless aid..

Experience scenic singletrack and natural terrain at Hahamongna Watershed Park in Pasadena with options for a trail half marathon, 10K, or 5K on Sunday, October 18, 2026. Perfect for trail runners seeking a challenging yet runnable course.

Challenge yourself on scenic trails at the Caspers Trail Races in Caspers Wilderness Park on October 24, 2026. Choose distances 10k to 50k and enjoy rugged singletrack, supportive aid stations and a festive finish line.

Push your limits at the Wildwood Canyon Trail Run, an 8 hour timed event in Yucaipa on a scenic 3.7 mile loop with about 600 feet gain per lap. Aid stations, live bluegrass and a brewery afterparty add festival fun.

Machete Muertos 200 at Lake Perris CA, Oct 28 to Nov 1 2026, is a multi distance trail festival from a scenic 10 mile loop to a rugged 200 mile ultramarathon. Expect technical terrain, huge elevation gain, a 20 mile ruck division and campgr..

Run scenic, rugged trails in Cleveland National Forest at the Saddleback Marathon in Silverado on November 7 2026. Choose marathon, new 25k, half or 10K courses with big climbs and sweeping canyon views, racing out of Black Star Canyon for..