| John Hart's efforts: | From | Age | Date | Finish Time |
|---|---|---|---|---|
| 2020 Running Up For Air Mt. Sentinel (12 Hour) | Montana, US | 53 | Saturday, February 22, 2020 | 11:07:46.00 |
| Hardrock 100 2012 | Montana, US | 46 | Friday, July 13, 2012 | 29:35:00.00 |
| John Hart's efforts: | From | Age | Date | Finish Time |
|---|---|---|---|---|
| 2020 Running Up For Air Mt. Sentinel (12 Hour) | Montana, US | 53 | Saturday, February 22, 2020 | 11:07:46.00 |
| Hardrock 100 2012 | Montana, US | 46 | Friday, July 13, 2012 | 29:35:00.00 |