Spencer Dennis has 3 recorded races from Portsmouth, New Hampshire, US.
| Date | Race | Distance | Time | Overall |
|---|---|---|---|---|
| 2025-10-26 | Seacoast Half Marathon | 2:03:01 | 451 | |
| 2025-06-14 | Market Square Day 10k 10K Run | 58:02 | 396 | |
| 2024-06-08 | Market Square Day 10K 10K Run | 54:58 | 256 |