| Event Locations: |
|---|
| Breckenridge, Minnesota |
| Wahpeton, North Dakota |
| Baltic, South Dakota |
| Sioux City, Iowa |
| South Sioux City, Nebraska |
| Hiawatha, Kansas |
| St Joseph, Minnesota |
| Miami, Oklahoma |
| Sponsor | Name | Date | Runners | Category | Distance | Comment |
| Mainly Marathons | Prairie Series #8 | 16/05/2021 | 13 | Marathon | 42.195 km | |
| Mainly Marathons | Prairie Series #7 | 15/05/2021 | 33 | Marathon | 42.195 km | |
| Mainly Marathons | Prairie Series #6 | 14/05/2021 | 22 | Marathon | 42.195 km | |
| Mainly Marathons | Prairie Series #5 | 13/05/2021 | 28 | Marathon | 42.195 km | |
| Mainly Marathons | Prairie Series #4 | 12/05/2021 | 38 | Marathon | 42.195 km | |
| Mainly Marathons | Prairie Series #3 | 11/05/2021 | 29 | Marathon | 42.195 km | |
| Mainly Marathons | Prairie Series #2 | 10/05/2021 | 25 | Marathon | 42.195 km | |
| Mainly Marathons | Prairie Series #1 | 09/05/2021 | 37 | Marathon | 42.195 km | |
| Mainly Marathons | Prairie Series #2 | 17/07/2017 | 52 | Marathon | 42.195 km | |
| Mainly Marathons | Prairie Series #1 | 16/07/2017 | 58 | Marathon | 42.195 km |