50 KM Ultra Running Events in Illinois
Upcoming Events
| Date | Event | City | Distances |
|---|---|---|---|
| 07/17/26 | Cry Me a River! | Chillicothe | 50 KM , 100 KM , 100 Miles |
| 07/17/26 | CMAR Trail Races | Chillicothe | 50 KM , 50 Miles , 100 Miles |
| 08/15/26 | Next Loop Endurance Series - Busse Woods IL | Elk Grove Village | 50 KM |
| 08/22/26 | Shawnee Hills 100 | Ozark | 50 KM , 100 KM , 100 Miles |
| 08/29/26 | The Next Loop: Endurance Series - Half Day Forest Preserve, Il | Vernon Hills | 50 KM |
| 09/05/26 | Temptation 200 Ultras | Forest City | 50 KM , 100 KM , 150 KM , 200 KM |
| 09/13/26 | Rock Cut Hobo Trail Runs | Rockford | 50 KM |
| 09/26/26 | Hindsight Ultra Trail Runs | Dixon | 50 KM , 100 KM , 100 Miles |
| 10/03/26 | The Hennepin Hundred | Sterling | 50 KM , 50 Miles , 50 Miles , 100 Miles |
| 10/10/26 | Des Plaines River Trail Races | Vernon Hills | 50 KM , 50 Miles |
| 10/17/26 | Shake Your Trail Feather Trail Run | Charleston | 50 KM , 100 KM |
| 10/24/26 | Fancy Nonsense 25k/50k | Willow Springs | 50 KM |
| 03/27/27 | Chicago Lakefront: Spring Version | Chicago | 50 KM |
| 04/24/27 | Childish Nonsense | Palatine | 50 KM , 50 Miles |
Past Events
| Date | Event | City | Distances |
|---|---|---|---|
| 04/18/26 | Earth Day 50K | Crystal Lake | 50 KM |
| 04/18/26 | Loud Thunder 50 | Illinois City | 50 KM , 50 Miles |
| 01/10/26 | Frozen Gnome | Crystal Lake | 50 KM |
| 12/06/25 | Arctic Frog Run (IL) | Libertyville | 50 KM |
| 11/08/25 | Paleozoic Trail Runs - Cambrian Fall III | Willow Springs | 50 KM |
| 11/01/25 | Chicago Lakefront: Fall Version | Chicago | 50 KM , 50 Miles |
| 08/27/25 | United Center Challenge | Chicago | 50 KM |
| 04/20/24 | Zoomies 50K | Aurora | 50 KM |
| 03/23/24 | Paleozoic Trail Runs - Devonian Spring II | Chicago | 50 KM |
| 09/03/23 | St. Jude Runs - Kilometers for Kids 10 x 5k | Quincy | 50 KM |
| 08/19/23 | Illiniwek Race The Night | Hampton | 50 KM |
| 10/23/21 | Outer Belt Ultras | Chicago | 50 KM , 50 Miles , 100 KM , 100 Miles , 210 Miles |
| 09/18/21 | Forge Ultra 50K | Lemont | 50 KM |
| 03/20/21 | Paleozoic Trail Runs - Silurian Spring II | Palo Park | 50 KM |
| 11/09/19 | Paleozoic Trail Runs - Cambrian Fall II | Palos Park | 50 KM |
| 09/28/19 | Oak Point Trail Run | Golconda | 50 KM |
| 10/20/18 | Ondessonk Trail Races | Ozark | 50 KM |
| 09/15/18 | Evergreen Lake Ultras | Hudson | 50 KM , 34 Miles , 51 Miles , 100 KM |
| 03/25/17 | Paleozoic Trail Runs - Carboniferous Spring | Wood Springs | 50 KM |
| 11/12/16 | Paleozoic Trail Runs - Silurian Fall | Palos Park | 50 KM |
| 11/14/15 | Paleozoic Trail Runs - Permian Fall | Wood Springs | 50 KM |
| 10/18/14 | Forest Glen Trail Run | Westville | 50 KM |
| 11/16/13 | Paleozoic Trail Runs - Carboniferous Fall | Palos Park | 50 KM |
| 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 |
| 12/18/10 | Deer Grove FA50 | Palatine | 50 KM |
| 10/23/05 | DeTonty | Willow Springs | 50 KM |
| 12/19/82 | Running Central Ultra Challenge | East Peoria | 50 KM |