Trail Running calendar near Simi Valley 2026-2027

Start 2026 strong at Ring in the New Year in South El Monte on January 4 with 5k, 10k, 15k and half marathon routes on scenic Whittier Narrows trails. Enjoy custom medals, free photos and post race snacks.

Join OC Trail Runners for a free social trail run at El Moro and Laguna Coast Wilderness Park in Newport Beach, led by an Aravaipa rep. About 7.5 miles with rocky sections, so bring hydration and stay after for snacks and a raffle.

Run or hike to the iconic Hollywood Sign through scenic Griffith Park, with 8M, 8K, 5K and a kids 2.2K option. Enjoy skyline views, chip timing, finisher medal and post race refreshments in a true LA outdoor experience.

Run or hike through Griffith Park to the iconic Hollywood Sign on out and back courses ranging from a kids run to 8 miles. Enjoy skyline views, chip timing, aid stations and a finisher medal.

Run the scenic Sean O'Brien Trail Races in Calabasas on January 31, 2026, with distances for every trail runner. The 100K is a Western States 100 qualifier, and options from 30K to 50 Miler promise challenge and community.

Run scenic backcountry trails at Boney Mountain Trail Run in Newbury Park on February 7, 2026, with half marathon and 7k options. Expect rugged single track, ocean views, creek crossings and lively post race festival with tacos and awards.

Scenic Boney Mountain trail run in Thousand Oaks offers challenging half marathon or 7k routes with creek crossings, single track climbs and ocean views. Enjoy race shirts, medals, free photos, vegan breakfast and a $500 course bonus.

Run scenic park trails at Kenneth Hahn with 5k, 10k, 15k and half marathon options on February 8, 2026. Enjoy custom finisher medals, goodie bags, free photos, on course aid and a challenging hill for a true outdoor racing day.

Celebrate Valentine's Day with a scenic road and trail run at Griffith Park, offering distances from 5K to half marathon and custom finisher medals. Enjoy aid stations, free photos, and a festive postrace vibe for runners of all paces.

Run rolling trails at Debs Park in the 4 Mile Hill Challenge, with a scenic 4 mile route, a spirited 2K youth climb and a green earth celebration. Note the event is currently listed as postponed.

Explore scenic fire roads and foothill trails at Tejon Ranch with sweeping Tehachapi views and chances to spot elk, deer or raptors. Distances from 11k to 100k, plus camping and a lively finish festival with food and beer.

Pick a scenic 6K or adventurous 12K through Panorama Vista Preserve along the Kern River with flat fast stretches and bluff climbs. Chip timing, custom shirt and finisher medal plus pancakes and raffles make this a fun community run.

Join AllWeDoIsRun for scenic trail events across central California with distances from 5K to 100 mile and multi day endurance options. ATRA and RRCA standards guarantee a quality race experience for ultrarunners and trail fans.

Run Catalina Island Marathon, 10K and 5K on March 14, 2026 along scenic trails with ocean views and rolling hills. Join the 48th annual event and California State Off Road Marathon Championship in Avalon.

Take on scenic singletrack through Las Virgenes Canyon in Calabasas with creek crossings, switchbacks, and expansive views. Choose a challenging 22k or a fun 10k and enjoy a local finisher medal, hot coffee, and race day photos.

Run Santa Barbara's rugged front country on the Nine Trails 35 mile endurance race March 14, 2026, with an option for a half out and back route. Expect steep, technical trails, big climbs, aid stations, and spectacular coastal views.

Experience scenic single track ridgelines and canyon trails in the Valencia hills north of Los Angeles on March 21, 2026. Choose a 10K, half marathon or challenging 50K ultra with big climbs, aid stations and finishers' swag.

Enjoy scenic trails at Whiting Ranch Wilderness Park through foothills with native oak trees and sweeping views, with distances from 6k to 30k. Marked courses, staff support and event swag make this a welcoming trail race for all levels.

Run Griffith Park Trail Marathon in Los Angeles with distances from 10K to 50K and a scenic marathon route up toward the Hollywood sign on single track and fire roads. Aid stations and race morning bib pickup keep runners supported.

Challenge yourself at the Billy Goat Mountain Climb on April 4, 2026 in Cleveland National Forest near Silverado CA. Choose the 17 Miler Silverado Loop, Half Marathon or 10K and tackle rugged trails with big climbs and creekside scenery.