100 KM Ultra Running Events in Ontario
Upcoming Events
| Date | Event | City | Distances |
|---|
Past Events
| Date | Event | City | Distances |
|---|---|---|---|
| 05/30/26 | Great Mansfield Outdoors | Mansfield | 50 KM , 100 KM |
| 05/23/26 | Sulphur Springs Trail Race | Ancaster | 50 KM , 50 Miles , 100 KM , 100 Miles , 200 Miles |
| 04/18/26 | The Foxtail Rail Trail Race | Dundas | 50 KM , 50 Miles , 100 KM , 100 Miles |
| 06/03/23 | Fiddle50 | Shelburne | 50 KM , 50 Miles , 100 KM , 160 KM |
| 07/04/15 | Laura Secord Memorial 100k/50k/25k | Niagara Falls | 25 KM , 50 KM , 100 KM |
| 05/03/08 | Toronto Ultra | Toronto | 50 KM , 100 KM |
| 09/04/88 | Patenauge's Choise | St. Jacobs | 50 KM , 50 Miles , 100 KM |