Pasadena Trail Half Marathon

OCT
18
2026
A trail running event in October at Hahamongna Watershed Park offering 5K, 10K and a hilly half marathon across mixed single track and fire roads.
Sun 18 Oct 2026
13 miles 10 kilometers 5 kilometers

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Pasadena Trail Half & 5K/10K

Pasadena Running Company presents the 2026 Pasadena Trail Half & 5K/10K, scheduled for Sunday, October 18. The event offers three trail distances and uses the connected trail system around Pasadena.

  • 5K 3.12 mi, +306 ft
  • 10K 6.2 mi, +400 ft
  • Half Marathon 13.12 mi, +1855 ft

The race takes place at Hahamongna Watershed Park in the foothills of Pasadena within the Angeles National Forest. Trails include single track, rocky terrain, mixed use truck trails and fire roads, with notable climbs on El Prieto Canyon, Brown Mountain Road and the Gabrieleno Trail. Course maps include distance, elevation profiles and terrain details.

Early packet pick up is available the day before at Run With Us Pasadena, 235 N Lake Ave, Pasadena. Participants must bring ID or driver license and a signed waiver. Race day parking is free and available on site, with detailed directions emailed to registered participants.

Race features listed for registrants include an event shirt and tote bag, a commemorative wooden medal, a race goodie bag, electronic chip timing, marked and supported courses, at least one aid station per distance with water and electrolytes, and limited free post race photos. All participants running over five miles are required to carry personal hydration. Visit the organization's website for the most recent information.

13 mi
Trail Half Marathon
10 km
10k
5 km
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