O'Neill Park Trail Races
Rancho Santa Margarita, United States • 16 May 2026
Event details
O'Neill Park Trail Races is scheduled for Saturday, May 16, 2026, at O'Neill Regional Park, 30892 Trabuco Canyon Road, Trabuco Canyon, CA. The event is organized by KHRaces and offers multiple trail race distances:
- 50k
- Marathon
- 30k
- Half Marathon
- 10k
Registration opened October 1, 2025, and closes May 1, 2026. The race does not offer refunds; in the event of cancellation for weather or fire, entrants may receive a full rollover to the race make-up date or another KHRaces event.
Logistics and course
Parking at the park requires a $5 fee. Participants may pick up bibs and a parking pass at Fleet Feet Laguna Niguel on Friday, May 16, from 3:30 pm to 6:30 pm, or at the race start on race morning. The races run on trails in Trabuco and Live Oak Canyons through coast live oak and sycamore woodland. Vegetation along the course includes cactus, wild buckwheat, sagebrush, scrub oak, buckthorn and mountain mahogany. Past event results are available for previous years, including 2023 through 2025. Visit the organization's website for the most recent information.