2 ultra events in Dubuque County, Iowa

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

• Swiss Valley Trail Races [ultrasignup.com] [Register at ultrasignup.com] - Facebook
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  Sat, Oct 03, 2026

  25k 50k Trail Ultra

  13606 Swiss Valley Rd., Dubuque County, Iowa, 52068, United States
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