KHKH RacesTrail Series · Est. 2010
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Orange County · Trail Series

O’Neill Park Trail Races

Sat, May 15, 20277:30 AM · all distancesO'Neill Regional Park
Register on UltraSignupExplore the courses
Distances510K → 50K
Race DaySat, May 15, 2027All start 7:30 AM
WhereO'Neill Regional ParkTrabuco Canyon, CA
TerrainSingletrack& fire road · well-marked
Choose your distance

Five courses,
one wild park.

Every distance starts at 7:30 AM. Tap Course Map to explore the route and elevation, then register on UltraSignup.

10K

Start7:30 AM
6.2Miles
344Ft Gain
915Ft High
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Half Marathon

Start7:30 AM
13.4Miles
1,614Ft Gain
1,351Ft High
Register

30K

Start7:30 AM
18Miles
1,906Ft Gain
1,348Ft High
Register

Marathon

Start7:30 AM
26.4Miles
2,332Ft Gain
1,154Ft High
Register

50K

Start7:30 AM
31.7Miles
3,211Ft Gain
1,351Ft High
Register
The Race

Epic trail racing
in Orange County

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