50 Miles Ultra Running Events in Illinois

All 50 KM 50 Miles 100 KM 100 Miles 6 Hours 12 Hours 24 Hours

Date	Event	City	Distances
07/17/26	CMAR Trail Races	Chillicothe	50 KM , 50 Miles , 100 Miles
08/15/26	40/50 Mile Challenge, Busse Woods, IL	Elk Grove Village	40 Miles , 50 Miles
08/29/26	40/50 Mile Challenge, Half Day Forest Preserve IL	Vernon Hills	40 Miles , 50 Miles
10/03/26	The Hennepin Hundred	Sterling	50 KM , 50 Miles , 50 Miles , 100 Miles
10/10/26	Farmdale Trail Run	East Peoria	30 Miles , 50 Miles , 100 Miles
10/10/26	Des Plaines River Trail Races	Vernon Hills	50 KM , 50 Miles
11/14/26	Tunnel Hill 100	Vienna	50 Miles , 50 Miles , 100 KM , 100 Miles
11/14/26	McNotagain Fall Trail Runs	Pekin	30 Miles , 50 Miles
04/24/27	Childish Nonsense	Palatine	50 KM , 50 Miles

Date	Event	City	Distances
04/18/26	Loud Thunder 50	Illinois City	50 KM , 50 Miles
04/11/26	Potawatomi	Pekin	30 Miles , 50 Miles , 100 Miles , 150 Miles , 200 Miles
11/01/25	Chicago Lakefront: Fall Version	Chicago	50 KM , 50 Miles
10/23/21	Outer Belt Ultras	Chicago	50 KM , 50 Miles , 100 KM , 100 Miles , 210 Miles
04/14/12	McNaughton Park	Pekin	30 Miles , 50 KM , 50 Miles , 100 Miles , 150 Miles
01/14/12	Frosty Fifty	Crystal Lake	50 KM , 50 Miles
10/12/86	AMJA 100 Km Ultramarathon	Chicago	50 Miles , 100 KM