CO 200 Trail Race Course
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Illinois Ultramarathons with Waitlists

3 ultras tracked in Illinois. Live waitlist sizes, registered runners, race dates. Browse all races →

Loud Thunder 50M

Final Sold out

April 18, 2026 · 50 Miler · Illinois City, IL

1 on waitlist 51 registered

Loud Thunder 50K

Final Sold out

April 18, 2026 · 50K · Illinois City, IL

2 on waitlist 61 registered

Loud Thunder 1/2 Marathon

Final Sold out

April 18, 2026 · 1/2 Marathon · Illinois City, IL

3 on waitlist 99 registered