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Ultra marathons in Illinois, USA

8 upcoming ultra marathons in Illinois, USA, sorted by date.

8 races

December 2026

1 race

January 2027

1 race

Crystal Lake, IL, US

March 2027

3 races

American Bottoms

Columbia, IL, US

Grafton, IL, US

50 km25 km13 km

Clinton Lake Ultra

April 2027

3 races

Potawatomi Trail Runs

322 km241 km161 km81 km48 km16 km

Earth Day 50k/15 Mile/5 Mile

Crystal Lake, IL, US

Childish Nonsense

Palatine, IL, US

81 km50 km25 km9 km

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