Trail Running calendar near Simi Valley 2025-2026

Run the scenic Catalina Island Half Marathon or 10K on November 8, 2025 in Avalon, where a trail course climbs to a summit with sweeping Pacific and Channel Island views. Bring the family for a kids 1K or test yourself in the Triple Crown C..

The Rock Cobbler Trail Run will take place in Bakersfield on Saturday 8 November 2025. You can run between 13 and 26 miles.

Take on the 4 Mile Hill Challenge at Debs Park in Los Angeles on November 15, a scenic trail run over rolling hills with refreshment stops and a youth 2K uphill challenge. Pet friendly with race day packet pick up and a T shirt for particip..

Hit the autumn trails at Chino Hills State Park on November 15, 2025, with 30K and 50K options. Well marked courses, plentiful aid and sweeping views support the Discovery Center for a spirited day of trail running.

Run I Didn't Make It to CIF on Nov 15 in Ojai, a lively 3 mile cross country over scenic campus dirt trails with start and finish on the track. Entry includes electronic timing, a finisher medal, T shirt and post race snacks.

Join the 29th annual Patagonia Salmon Run, a scenic 5K in Ventura on November 16, 2025 that supports South Coast Habitat Restoration and its Ventura River fish passage project. Run, reduce waste, and celebrate local habitat conservation.

Celebrate the City of Fullerton's inaugural 5K Trail Run through scenic Brea Dam trails near the Fullerton Tennis Center and Golf Course. After the race, enjoy a Health & Wellness Fair, food trucks, a finisher shirt, medal and free photos.

Island View Endurance Run in Goleta, CA offers distances from 12 km to 100 mile across scenic coastal trails with big climbing. Supportive aid stations and buckle awards for 100 mile finishers make this a memorable ultrarunning test.

The Fremont Canyon 28k Trail Run is an exciting running event taking place in Irvine Regional Park, Orange, California. Scheduled for December 6, 2025, this challenging 28k (17.5 miles) course features fire roads with an elevation gain and..

Challenge yourself on rugged coastal trails at the Ray Miller 50/50 at Point Mugu State Park in Malibu on December 6, 2025. With 50 mile, 50K and 30K options, the 2025 race is sold out and the waitlist is closed.

Run under the stars on fully marked fire road courses at Mulholland Gateway Park in Tarzana, with 5K and 10K night options. Bring a working headlamp, enjoy aid stations, and collect a finisher medal and shirt.

Tackle coastal singletrack at Crystal Cove State Park with 15K, 6K or kids 1K routes featuring technical sections like the Rock Garden and the Wall. Celebrate with shirts and medals, free photos, a vegan friendly breakfast and a post race b..

Celebrate Hanukkah with the Hanukkah 8 Krazy Kilometers at Panorama Vista Preserve in Bakersfield. Run an 8K or 2K Latke Loop in person or virtually and enjoy a custom finisher medal, Hanukkah swag, and festive community spirit.

Celebrate the season with the Holiday Fun Run at Griffith Park, offering 5k, 10k, 15k and half marathon routes on scenic dirt horse trails and grassy starts. Enjoy on course aid, a finisher medal, free photos and post race snacks.

Get into the holiday spirit at Run for a Claus in Irvine on Dec 20, 2025, with 1 mile and 5K options plus virtual entries. Enjoy festive music, cookies, a Santa hat, finisher medal and support local charities and kids.

Join Paramount Ranch Trail Runs on December 20, 2025 for scenic trail races through the historic Paramount Ranch in Agoura Hills. Choose from 10K up to 50K and enjoy varied terrain, stunning views and a community race day organized by KHrac..

Ring in 2026 with the Happy New Year Run at West Creek Park in Valencia, CA. Choose from 5k, 10k, 15k or half marathon on scenic looped trails, enjoy finisher medals, free photos and a festive start to your year.

Ring in the New Year with a scenic trail run at Whittier Narrows Recreation Area on January 4, 2026. Choose 5k, 10k, 15k or a half marathon and enjoy finisher medals, free photos, aid stations and a festive post race vibe.

Run or hike to the iconic Hollywood Sign through scenic Griffith Park with sweeping views of Los Angeles. Finish near the Old Zoo and celebrate at a lively festival with medals, photos and refreshments.

Challenging trail races in Calabasas on Jan 31, 2026 offer distances from 30K to a WS100 qualifying 100K, plus 50 Miler, 50K and marathon. The event is sold out now but a waitlist is available for hopeful runners.