| Jon Warkentin's efforts: | From | Age | Date | Finish Time |
|---|---|---|---|---|
| Never Summer 60k (2025) | Colorado, US | 40 | Friday, July 25, 2025 | Not yet started |
| Staunton Rocks! Marathon & Half 2022 (Half Marathon) | Colorado, US | 37 | Saturday, August 27, 2022 | 02:17:13.00 |
| Staunton Rocks! Marathon & Half (Half Marathon) | Colorado, US | 36 | Saturday, August 28, 2021 | 01:52:30.00 |
| Quad Rock 2020 (Quad Rock 25) | Colorado, US | 35 | Saturday, August 15, 2020 | 04:53:51.00 |