Oscar Hartnett has 3 recorded races from Yarmouth, Maine, US.
| Date | Race | Distance | Time | Overall |
|---|---|---|---|---|
| 2025-07-19 | Pat's Pizza Clam Festival Classic 5Mi Run | 41:42 | 210 | |
| 2023-07-04 | L.L.Bean 10K 10K Run | 55:50 | 347 | |
| 2022-07-04 | L.L. Bean July 4th 10K 10K Run | 56:08 | 332 |