Trail Running calendar near Simi Valley 2026-2027

A 10K trail run and hike on May 3, 2026, covering 6.2 miles with 1,686 feet of elevation gain. The Brand Park course climbs to 2,536 feet and offers wide views of the Los Angeles Basin and the San Gabriel Mountains.

Trail loop courses at Crystal Cove State Park feature ocean views and hill climbs; proceeds support the John Wayne Cancer Foundation and fundraising runs the week of April 20 to 26, 2026.

Trail runs from the Chesebro Trailhead in the Santa Monica Mountains with **22k** and **10k** options, marked course, aid stations, finisher medals and included race photography.

An 80s inspired martial arts themed race day in Canoga Park on May 16, 2026 offering 5K, 10K and a 13.1 mile half plus a virtual option with medal shipping.

A mountain trail race in Sierra Madre on May 23, 2026 featuring an 8.6 mile out-and-back course from Kersting Court to Orchard Camp, a Kids Fun Run, and community-led trail repair efforts supported by the Fletcher Trail Maintenance Fund.

Páli Peak Trail Run takes place May 23, 2026 in Bakersfield, California and offers in-person and virtual 5K, 10K and 21K options. Race day includes packet pickup, pre-race announcements, awards and closing announcements.

A one-day event at Hahamongna Watershed Park on May 24, 2026, offering a 50K team relay, a 50K solo ultramarathon, and a 10K Fun Run for solo participants.

Looped trail races at West Creek Park in Valencia offering 5k, 10k, 15k and a half marathon with aid stations each loop. Registration includes a finisher medal, goodie bag, free photos, and results posted within 24 hours.

A 5k trail run at Black Star Canyon in Silverado, California, with mixed fire road and single track, 390 ft elevation gain, one aid station, a cupless policy, and pre-run access restricted to authorized days.

A spring trail event in the Angeles National Forest offering a 50k and a half marathon across Pacifico Mountain with technical singletrack, multiple aid stations and a finish festival. The 50k awards Sterling Silver Tickets and a course rec..

An annual 5K and 10K run and walk in Rolling Hills Estates on May 30, 2026, using the city bridle trails around Ernie Howlett Park. Overall and age division winners receive plaques and medals.

Free, social group run by Aravaipa at El Moro and Laguna Coast Wilderness Park in Newport Coast on May 30, 2026. The route is about 5.5 miles with roughly 500 feet of ascent, some rocky sections, and post-run snacks and a raffle.

Malibu Canyon Trail Races at Point Mugu State Park in Malibu, CA on June 6, 2026 offers trail distances from a half marathon to 100K. The event is sold out with a waitlist and has volunteer shifts that can be traded for a free KHraces entry..

The City of Fullerton’s inaugural Fullerton Fit 5K Trail Run takes place June 6, 2026 on a dirt course near Brea Dam, accompanied by a Health & Wellness Fair with vendors, demonstrations, and food trucks.

A trail marathon relay and 8K in Griffith Park on June 7, 2026, featuring a true loop course with varied terrain, team relays or solo 8K, three aid stations, chip timing, race shirts and medals, music, food trucks and cash awards.

A four race series of open 5 km races at Panorama Vista Preserve in Bakersfield, with Youth, High School and Adult divisions, two waves, a 45 minute time limit, and series scoring that counts each runner's best three races.

A multi-distance trail running event at Griffith Park on June 13, 2026, offering 5k, 10k, 15k and a half marathon on hard-packed horse trails with an aid station, finisher medals, free photos, and posted results.

A second annual running event at the Old Los Angeles Zoo area on June 14, 2026, offering a half marathon and a 12K on relatively flat, scenic trails. Registration runs November 21, 2025 to January 26, 2026 with fees from $49.

Los Mugrosos 5K - La Vida Sucia Run in South El Monte, CA on June 14, 2026 features a scenic single-loop 3.1 mile trail and a 0.3 mile kids dash, with shirts and finisher medals included and a 90-runner limit for the 5K.

Orange Curtain Run in Orange County, California offers a range of distance and timed events from 10K to 100K on mixed pavement and bike path surfaces. The event is scheduled for June 19 and 20, 2026 and includes a certified marathon.