Harry Seffker has 4 recorded races from Mantua, UT.
| Date | Race | Distance | Time | Overall |
|---|---|---|---|---|
| 2026-07-18 | Mantua Dam Race 5 Mile | 1 Mile | 1:17:21 | 298 |
| 2024-07-13 | Mantua Dam Race 5 Mile | 1 Mile | 1:06:32 | 238 |
| 2023-07-15 | Mantua Dam Race 5 Mile | 1 Mile | 55:41 | 169 |
| 2022-09-10 | 2022 REVEL Big Cottonwood Half Marathon | Half Marathon | 2:11:54 | 1549 |