| Jeff Black's efforts: | From | Age | Date | Finish Time |
|---|---|---|---|---|
| The Bear 100 2025 | Idaho, US | 55 | Friday, September 26, 2025 | 31:17:46.00 |
| Never Summer 100k (2019) | Idaho, US | 49 | Saturday, July 27, 2019 | 19:11:43.00 |
| Jeff Black's efforts: | From | Age | Date | Finish Time |
|---|---|---|---|---|
| The Bear 100 2025 | Idaho, US | 55 | Friday, September 26, 2025 | 31:17:46.00 |
| Never Summer 100k (2019) | Idaho, US | 49 | Saturday, July 27, 2019 | 19:11:43.00 |