Pasadena Trail Half Marathon

Pasadena, United States • 18 Oct 2026

Pasadena Trail Hafl & 5K/10K

The event takes place on Sunday, October 18, 2026, at Hahamongna Watershed Park in Pasadena, California (4550 Oak Grove Drive, Pasadena, CA 91103). The organizer describes this as the flagship race that closes the year.

Distances and course

  • Half
  • 5K
  • 10K

The organizer states the half-marathon routes use local trails that are described as the most challenging and intended for experienced trail runners. The organizer also notes that spots for the Pasadena Trail Half sell out quickly. Visit the organization's website for the most recent information.

Race information

Half Marathon
Pasadena Trail Half Marathon
10 km
Pasadena Trail 10k
5 km
Pasadena Trail 5k
Visit the organization's website for the most recent information.
Trail runs nearby

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.

Take on the Chino Hills Trail Run Series Fall at Chino Hills State Park on Dec 13, 2025 with 30K and 50K routes through chaparral and oak woodlands. Aid stations and sweeping views make this a must for fall trail lovers.

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.

Run or walk the 10th annual Homeless for the Holidays at Griffith Park on a scenic flat 5K or 2.5K, with chip timed and self paced options. Proceeds support Pennies From Kevan and local programs serving those facing homelessness.