2 ultra events in Crystal Lake, Illinois

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

• Earth Day 50k/15 Mile/5 Mile [earthdaytrailrace.com] [Register at ultrasignup.com] - Facebook - Instagram
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  Sat, Apr 18, 2026 at 8:00 AM

  5 Miles 15 Miles 50k Ultra

  Veteran Acres, Crystal Lake, Illinois, United States
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