2 ultra events in Lake County, Illinois

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

• Des Plaines River Trail Races [desplainesrivertrailraces.com]
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  Sat, Oct 10, 2026

  Description

  Flat and fast trail ultra marathon series on crushed gravel trail through forests and wetlands, featuring half marathon, marathon (BQ), 50K, and 50-mile options.

  Marathon Run Trail Ultra

  Lake County, Illinois, United States
  OpenStreetMap Google Maps
• Des Plaines River Trail Races [desplainesrivertrailraces.com] [Register at ultrasignup.com] - Facebook - Instagram
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  Sat, Oct 10, 2026

  50k 50 Miles Half Marathon Trail Ultra

  619 S. Milwaukee Ave., Lake County, Illinois, 60069, United States
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