Trail Running calendar near Simi Valley 2025-2026

We have found 48 Trailruns within 80 miles of Simi Valley. See below where and when you can find the races.

Run the Boney Mountain Trail Run at Rancho Sierra Vista Satwiwa on Feb 7, 2026 for ocean views, creek crossings and steep climbs in Point Mugu. Choose 13.1 or 4.4 mile routes and finish with a medal, shirt and plant based breakfast.

Run beneath Boney Mountain on rugged single track with creek crossings and ocean views. Choose a backcountry half or 7k and enjoy a lively post race festival with tacos, massages and finisher swag.

March 2026

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.

Tackle the 48th Catalina Island Marathon, 10K or 5K on March 14, 2026 in Avalon. Trail routes through the Catalina Island Conservancy serve up ocean views and rolling green hills for a scenic off road challenge.

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.

Run scenic singletrack through Las Virgenes Canyon in Calabasas with 22k and 10k options featuring hills, switchbacks and creek crossings. This March event is Race 2 of the SoCalTrail Trail 1/2 Series and includes shirts, finisher medals an..

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.

April 2026

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.

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..

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.

Join the 41st Nature Made Great Race in Agoura Hills on April 11, 2026 for scenic trail and on road runs from 1 mile to half marathon plus combo challenges and a virtual option. Expect medals, live timing, an expo and family friendly fun.

Join the Run4Kids Ultra Running Party in Corona, CA on April 17 and 18, 2026 for a weekend of road and ultramarathon racing. Choose distances from half marathon to 100 mile or try timed events while supporting youth runners.

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.

Run as far as you can in the redwood grove at Carbon Canyon Regional Park in Brea, choosing a 3, 6, or 12 hour timed division. Looping trail laps, stocked aid and finisher shirt and medal make this a scenic endurance challenge.

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.

Join the Griffith Park Trail Marathon Relay and 8K for team excitement or a scenic solo run on fire roads and trails. Enjoy chip timing, a finisher medal, live music, food trucks and post race fun plus cash prizes for top finishers.

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.