Castaic
Trail Running Calendar near Castaic 2026-2027
Explore the top trail runs near Castaic for 2026-2027! We've gathered 25 exciting trail runs in the area. Check out our detailed list below to find your next local trail run.
August 2026
Free weekly 5 km community event at Upper Las Virgenes Canyon Open Space Reserve in Woodland Hills, organised by volunteers; bring a scannable barcode for a recorded time.
Course preview at Rancho Simi Park in Simi Valley with marked looped routes, aid stations each loop, and options from 5k to half marathon.
September 2026
A one-day cross country meet in Santa Clarita on September 5, 2026 featuring a 4K open race for runners 19 and older with a $15 entry fee.
A trail 10k and a non-timed 4.5 mile Hiker's Delight in Red Rock Canyon with steep fireroad climbs, singletrack, aid stations, shuttle-only access and festival amenities.
Trail running event in Simi Valley with 50K, 30K and 15K routes through Rocky Peak, Las Lljas and Tapo Canyon and multiple aid stations.
October 2026
An obstacle course mud event in Castaic with a chip timed 4 mile and a 1 mile kids fun run, plus on site showers and changing tents.
Halloween themed running event in Valencia offering 5k, 10k, 15k and a half marathon with marked loops, aid stations, and finisher medals.
A stair-climbing event in Central Park, Santa Clarita on October 10, 2026 to raise awareness for rare diseases; registration fee $20 and donations accepted.
Trail running at Vasquez Rocks Natural Park in Aqua Dulce, CA with 13.9 mile, 15K, 10K and 5K race options on October 17, 2026.
Trail races in Cheeseboro Canyon offering 50k, Half Marathon and 10k courses across varied singletrack, fire roads and scenic climbs with aid stations and post-race festival amenities.
A brand new Halloween morning trail 5K at Pelona Vista in Palmdale that climbs the local big hill, with a costume friendly club atmosphere and $25 registration.
November 2026
A Thanksgiving Day community run in Santa Clarita offering a 5K cross country course through Central Park and a 1K for children. The event benefits the Santa Clarita Track Club and awards medals to the first 600 competitors.
December 2026
Holiday-themed running in Valencia on December 6 offering 5k, 10k, 15k and a half marathon on marked looped courses with aid stations and finisher medals.
Five trail distances at Paramount Ranch on December 19, 2026, run on singletrack and fire road with mapped elevation profiles.
January 2027
February 2027
A family friendly run and walk in Valencia CA featuring 1K, 5K and 10K options plus virtual races. The USATF certified course runs along the South Fork River Trail and proceeds support Students Off And Running with an expo and festive activities.
March 2027
Trail running event in Valencia California on 03/20/2027 offering 10K, Half Marathon, and 50K Ultra across hills, ridgelines, and canyon terrain with views of the Santa Clarita Valley.