6 ultra events in Riverside County, California

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

• ANNUAL NATRO@NOLI INDIAN SCHOOL Trail Races [noliindianschool.net] [Register at ultrasignup.com]
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  Sat, Apr 18, 2026

  5k Half Marathon Kids Trail Ultra

  45750 Castille Canyon Rd, Riverside County, California, 92538, United States
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• Machete Trail Madness 100k [machetemadness.com] [Register at ultrasignup.com] - Facebook - Instagram
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  Sat, Apr 25, 2026 at 6:00 AM

  10k 50k 100k Trail Ultra

  17801 Lake Perris Dr, Riverside County, California, United States
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• Elder Creek Night Runs [eldercreektrailruns.com] [Register at ultrasignup.com] - Facebook - Instagram
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  Sat, Jul 25, 2026

  30k 50k Relay Run Ultra

  Cahuilla Road, Riverside County, California, United States
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• Cahuilla Rez Ultra [redroadracing.org] [Register at ultrasignup.com]
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  Sat, Oct 17, 2026

  5k Half Marathon Ultra

  2000 Cahuilla Rd, Riverside County, California, United States
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• Machete Muertos 200 [machetemadness.com] [Register at ultrasignup.com] - Facebook - Instagram
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  Wed, Oct 28, 2026

  Ultra

  17801 Lake Perris Dr, Riverside County, California, United States
  OpenStreetMap Google Maps

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