Trail Running calendar near Simi Valley 2025-2026

We have found 45 Trailruns within 80 miles of Simi Valley. See below where and when you can find the races.

Experience rugged mountain trails and sweeping views at Tierra Redonda Mountain Trail Run and Camp in Bradley California on November 15 2025. Choose from epic 48 hour and 24 hour challenges or 20 km 10 km and 5 km distances.

Join the VALENCIA Trail Race in Valencia California on March 21, 2026 for scenic, rugged single track and ridge runs with 10K, half marathon and 50K distances. Expect big climbs, friendly aid stations and a festive finish.

Take on the Griffith Park Trail Marathon in Los Angeles, an out and back trail run that climbs near the Hollywood sign with single track and fire road scenery. Multiple distances and well spaced aid stations make it a great day for trail ru..

April 2026

Billy Goat Mountain Climb on April 4, 2026 in Silverado CA invites runners to tackle scenic, challenging climbs through Cleveland National Forest with a 10K, half marathon, or a 17 mile Silverado Loop with big elevation gain. Finish line sh..

Run the scenic Point Mugu Trail Run in Malibu with ocean view switchbacks and challenging climbs on the Fireline Trail. Choose a half marathon or 10k, enjoy a finisher medal, free breakfast tacos and a beer garden and a course record bonus.

Celebrate Easter with a trail run at Griffith Park in Los Angeles. Choose distances from 5k to a half marathon on scenic dirt paths with a grassy start and finish. Finisher medals, snacks and free photos add festive fun for all paces.

Hit the trails in Moro Canyon at Crystal Cove State Park in Laguna Beach with 6K and 10 mile courses offering ocean views, climbs, and flowing descents. Race photos, a shirt, and a finisher medal are included.

Run the 41st Nature Made Great Race in Agoura Hills for scenic trail and road courses from a 1 mile to a half marathon and unique stack challenges. Race day includes an expo, tech shirt, on course support and finisher medals.

Test yourself on the scenic Leona Divide trails in Lake Hughes on April 18, 2026 with distances from 30k to 100 miles. The 100 and 100k are Western States qualifiers and the 50 mile offers an AC100 Silver ticket; register by April 1.

Join the 14th annual Aut2Run for Autism in Camarillo with in person and virtual options to benefit Autism Society Ventura County. Choose 1 mile to 15K, plus a kid friendly FunK, earn a finisher medal, and support local programs.

May 2026

Join Coyote Two Moon, May 1 to 3, 2026 in Ojai, California, for scenic trail ultras in Los Padres National Forest with distances from 10K to 100 Miler. Expect big climbing, rugged singletrack, and a small field for a true mountain test.

Run high mountain trails around Pacifico Mountain in the scenic Angeles National Forest with options of a 50k ultra or 21k trail race. Enjoy alpine views, aid stations, finish line food and on course support for a true SoCal trail day.

June 2026

Hit coastal singletrack at the Malibu Canyon Trail Races in Point Mugu State Park. Pick distances from half marathon to 100K and enjoy stunning ocean views and a rewarding trail challenge on June 6, 2026.

Run scenic trails in Griffith Park Los Angeles at the Trail Marathon Relay & 8K on June 7, 2026 with team relays, live DJs, food trucks, swag and medals. Enjoy varied terrain, free photos and a festival finish.

Run Phoenix Rising at Griffith Park with 5k, 10k, 15k or half marathon options on scenic dirt trails around Crystal Springs. Expect aid stations, finisher medals, free photos and a friendly shared trail with hikers and equestrians.

Tough Topanga invites trail runners to scenic Topanga State Park with 10k, 15k and a 1 kilometer junior race over winding singletrack and big climbs. Finish with a handmade medal and tee, post race breakfast, a beer garden and massage.

July 2026

Take on the Harding Hustle in Cleveland National Forest on July 18, 2026, with 50K, 30K and 15K options over scenic, rugged jeep road terrain. Expect hot July conditions, stocked aid stations, chip timing and hearty post race food.

Event overview Tough Mugu is a trail running event held at La Jolla Group Campground in Point Mugu State Park, 1 mile north of 9000 E Pacific Coast Hwy, Malibu, CA 90265. The event includes the following race distances: 10k 25k The event..

Join Hot to Trot at Griffith Park on July 18, 2026 for 5k, 10k, 15k and half marathon options on scenic dirt trails. Enjoy aid stations, custom finisher medals, free photos and a friendly community vibe.

August 2026

The Bulldog Ultra The Bulldog Ultra is a trail running event held in the Santa Monica Mountains at Malibu Creek State Park on August 15, 2026. Distances offered include: 25k Trail Run 50k Ultra 75k (listed in the event schedule) The cours..