Trail Running calendar near Irvine 2026-2027

A holiday trail event in San Diego on December 20, 2026 offering Marathon, Half Marathon, 10K and a new six hour hill climb based on 2.5 mile laps. Costume awards are presented in solo and team categories.

Experience a diverse trail running event in Escondido featuring everything from a 50 mile ultra to a stroller friendly 5k. Explore the valley floor or climb to the summit of Raptor Ridge in this cupless race series.

A 68 mile ridge line ultra across the Backbone Trail in the Santa Monica Mountains with about 13,600 feet of gain, relay options, and a 200 runner cap. Solo runners must show a prior 50 mile trail finish.

Lake Perris hosts a Spartan obstacle weekend Jan 23–24, 2027 with 5 km, 10 km, 21 km and kids races across a flat, fast course by the lake. Team entries, spectator access, volunteer options and service member discounts are available.

Trail races in Calabasas, CA on January 31, 2026 offering 100k, 50 mile, 50k, marathon and 30k distances; the 100k serves as a 2026 WS100 qualifier.

Event Overview This event takes place in Griffith Park, Los Angeles. It offers several trail run and hike distances. The start/finish location is on a fire road just north of the Old Zoo. Distances Participants can choose from the following..

Tackle scenic trails in Griffith Park with routes offering iconic views of the Hollywood Sign. Choose from an 8-mile hike, an 8K, a 5K, or a kids' run. All participants receive a finisher's medal and a t-shirt.

Del Dios Trail Race is the 12th annual "Race of the Gods" at Lake Hodges, Escondido, CA, offering 50K, half marathon, 10K, 5K and a Kids Dash on dirt roads and single-track trails with 100' to 1000' elevation gain; a championship qualifier.

A 24-hour trail event at Lake Perris featuring repeated climbs on the Molcajete 1.0 loop of about 4 miles per lap. Options include solo entries and four-person teams with awards for top individuals and teams.

Trail races at Daley Ranch near Dixon Lake offering a 50K (two 25K loops) and a half marathon with three stocked aid stations, published cut off times, course GPX files, and organized training runs from the Daley Ranch Gate.

A 10th annual trail race in San Pasqual Valley with 20 mile, half marathon and 10K routes through vineyards and orange groves. Longer routes summit Raptor Ridge twice and the finish includes a free local wine tasting.

A loop-based endurance event at Will Rogers State Historic Park offering 24, 12, and 6 hour timed races plus fixed distances and relay options on a 2.2 mile course.

Trail races at Goodman Ranch Sycamore Canyon Preserve near Poway, CA on February 27, 2027. Distances include 100K and 50K with solo and four person relay options plus a half marathon; solo 100K requires prior 50K completion.

Trail races on Catalina Island include a marathon, 10K and 5K in Avalon, California on March 13, 2027. The event is California's State Off-Road Marathon Championship and uses Conservancy trails with ocean views.

An obstacle mud run at Lake Elsinore Raceway on March 20, 2027 offering multiple course options, finisher rewards, spectator access, and volunteer and group opportunities.

VALENCIA Trail Race in Valencia, California offers 10K, half marathon and 50K ultra on single-track trails with multiple climbs and panoramic ridge views. The event features chip timing, aid stations and a cupless policy to reduce disposabl..

Tough Mudder Los Angeles on March 20 2027 at Lake Elsinore Raceway features multiple distance mud runs with more than 20 obstacles, finisher rewards, an Infinity multi lap option, and Mudder Village spectator access.

A trail race in Del Mar offering 10K, 5K and a kids dash on flat, fast out-and-back dirt courses with lagoon views and a downhill finish. It serves as the final Championship Qualifier of the Sunshine Series.

Multi distance trail running and gravel bike events at Diamond Valley Lake in Hemet, California. Routes include lakeside loops, out and back courses, a stroller 5K and a kids fun run.

San Diego Spartan Event Weekend at Pala Fox Raceway on April 10 and 11, 2027 features a 5 km Sprint, a 10 km Super, kids races, spectator access, and a post-race festival with mud pits and rope climbs.