6 ultra events in Orange County, California

From big races to Saturday morning group runs—find ultra events and connect with the local endurance sports community.

• O'Neill Park Trail Races [khraces.com] [Register at ultrasignup.com]
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  Sat, May 16, 2026 at 7:30 AM

  10k 30k 50k Half Marathon Trail Ultra

  30892 Trabuco Canyon Road, Orange County, California, 93688, United States
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• Harding Hustle [aravaiparunning.com] [Register at ultrasignup.com] - Facebook
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  Sat, Jul 18, 2026

  15k 30k 50k Ultra

  Tucker Wildlife Sanctuary, Orange County, California, United States
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• Riley Park Trail Races [rileyparktrailraces.com] [Register at ultrasignup.com]
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  Sat, Aug 01, 2026 at 7:00 AM

  5k 10k 30k Half Marathon Trail Ultra

  30952 Oso Pkwy, Orange County, California, 92690, United States
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• That's No Moon Trail Races [aravaiparunning.com] [Register at ultrasignup.com]
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  Sat, Oct 10, 2026

  30k 50k Trail Ultra

  13333 Black Star Canyon Rd, Orange County, California, 92676, United States
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• Live Oak Odyssey [aravaiparunning.com] [Register at ultrasignup.com]
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  Sat, Nov 14, 2026 at 8:00 AM

  Ultra

  30892 Trabuco Canyon Road, Orange County, California, 93688, United States
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