4 events in Dubuque County, Iowa

From big races to Saturday morning group runs—find running, cycling, triathlon, and swimming events and connect with the local endurance sports community.

• Iowa Trail Run Series: Mines of Spain [runsignup.com]
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  Sat, May 02, 2026 at 8:00 AM

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  The Iowa Trail Run Series is not about spending a bunch of cash for no reason. You'll get a great race with clear marking and course support, with basic timing, a cool custom bib, and a rotating race...

  The Iowa Trail Run Series is not about spending a bunch of cash for no reason. You'll get a great race with clear marking and course support, with basic timing, a cool custom bib, and a rotating race item such as a BUFF, socks, a stocking cap, coffee mug, and aluminum water bottle. Signing up for the entire series includes a series gift! Do you want a really soft and comfy tri-blend shirt with one of our Animal Icons? Great! Add one during your registration. We know some people have enough stuff in their closet and others may want to commemorate the day! Plenty of post-race food to refuel!

  3.1 Miles 6.2 Miles 13.1 Miles Run Trail

  8991 Bellevue Heights Rd, Dubuque County, Iowa, 52003, United States
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• Mines of Spain Trail Races [minesofspaintrailraces.com] [Register at ultrasignup.com] - Facebook - Instagram
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  Sat, Aug 08, 2026

  Half Marathon Trail

  8991 Bellevue Heights Rd, Dubuque County, Iowa, 52003, United States
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• 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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