Marathons in Illinois, United States 2026
42.2 kilometres (26.2 miles) — the classic endurance test. Browse upcoming events in United States.
8 upcoming races
Upcoming Races
Running
2026 Crystal Lake Half Marathon & 12K
Sep 6, 2026Crystal Lake, USA
Run 12 m
Running
The Hidden Gem Half Marathon 2026
Sep 12, 2026Flossmoor, USA
Run 21 m
Running
Belleville Main Street Marathon & Half Marathon
Sep 26, 2026Belleville, USA
Run 42 m
Running
Moraine Hills Run for the Hills 10K and Half Marathon
Sep 26, 2026Moraine Hills State Park, McHenry, USA
Run 10 m
Running
TBK Bank Quad Cities Marathon
Sep 27, 2026Moline, USA
Run 42 m
Running
2026 Bank of America Chicago Marathon
Oct 11, 2026Chicago, USA
Run 42 m
Running
14th Annual Springfield Marathon & Harvest Wind Half Marathon & 10K
Nov 7, 2026New Berlin, USA
Run 42 m
Running
Naperville Marathon
Dec 12, 2026Naperville, USA
Run 42 m