| John Seifert's efforts: | From | Age | Date | Finish Time |
|---|---|---|---|---|
| Staunton Rocks! Marathon & Half 2025 (Half Marathon) | Colorado, US | 28 | Saturday, August 23, 2025 | 02:53:54.00 |
| John Seifert's efforts: | From | Age | Date | Finish Time |
|---|---|---|---|---|
| Staunton Rocks! Marathon & Half 2025 (Half Marathon) | Colorado, US | 28 | Saturday, August 23, 2025 | 02:53:54.00 |