| Mark Kirkland's efforts: | From | Age | Date | Finish Time |
|---|---|---|---|---|
| The Bear 100 2025 | Illinois, US | 51 | Friday, September 26, 2025 | 34:11:52.00 |
| The Bear 100 2024 | Illinois, US | 50 | Friday, September 27, 2024 | 33:33:23.00 |
| The Bear 100 2023 | Illinois, US | 49 | Friday, September 29, 2023 | 35:41:59.00 |
| The Bear 100 2022 | Illinois, US | 48 | Friday, September 23, 2022 | 34:05:57.00 |