O'Neill Park Trail Races
Rancho Santa Margarita, United States • 16 May 2026
Event details
The O'Neill Park Trail Races take place on Saturday, May 16, 2026, at O'Neill Regional Park, 30892 Trabuco Canyon Rd, Trabuco Canyon, CA 92679. The event offers multiple trail distances:
- 50k
- Marathon
- 30k
- Half Marathon
- 10k
Registration opens October 1, 2025, and closes May 1, 2026. The event does not offer refunds; if the race is canceled for weather or fire, entries may be rolled over to the make-up date or another KHraces event. An athlete guide is available and past results for 2023 and 2024 are posted.
Logistics
Parking requires a $5 fee. Optional bib pickup is available at Fleet Feet Laguna Niguel (3:30 pm–6:30 pm) and at the race start on race morning (from 5:15) with a parking pass available for $5. Coaches from Well To Run and Fleet Feet Laguna Niguel offer training programs connected with the event. Sponsors listed for the event include Arc'teryx, Fleet Feet, GU Energy, and On The Side. Volunteer opportunities are organized by the race. Visit the organization's website for the most recent information.