Erin O'Brien has 4 recorded races from Manchester, New Hampshire, US.
| Date | Race | Distance | Time | Overall |
|---|---|---|---|---|
| 2025-11-09 | The Elliot Manchester City Marathon Half Marathon | 2:13:08 | 458 | |
| 2025-07-04 | Atlanta Journal-Constitution Peachtree Road Race 10K Run | 43:02 | 1018 | |
| 2023-07-04 | Atlanta Journal-Constitution Peachtree Road Race AJC Peachtree Road Race 10K | 10K | 48:52 | 2299 |
| 2022-07-04 | Atlanta Journal-Constitution Peachtree Road Race AJC Peachtree Road Race 10K | 10K | 48:47 | 1901 |