| George Grygar's efforts: | From | Age | Date | Finish Time |
|---|---|---|---|---|
| 2025 Running Up For Air (SLC) (12H) | Utah, US | 42 | Saturday, February 8, 2025 | 09:55:54.00 |
| The Bear 100 2022 | Utah, US | 40 | Friday, September 23, 2022 | DNF |
| George Grygar's efforts: | From | Age | Date | Finish Time |
|---|---|---|---|---|
| 2025 Running Up For Air (SLC) (12H) | Utah, US | 42 | Saturday, February 8, 2025 | 09:55:54.00 |
| The Bear 100 2022 | Utah, US | 40 | Friday, September 23, 2022 | DNF |