Andy Mamczak has 4 recorded races from Portsmouth, New Hampshire, US.
| Date | Race | Distance | Time | Overall |
|---|---|---|---|---|
| 2025-06-14 | Market Square Day 10k 10K Run | 50:12 | 158 | |
| 2024-06-08 | Market Square Day 10K 10K Run | 52:06 | 179 | |
| 2023-06-10 | Market Square Day 10K 10K Run | 40:54 | 35 | |
| 2022-06-11 | Market Square Day 10K 10K Run | 50:44 | 127 |