Diarmuid Horan has 3 recorded races from Chicago, Illinois, US.
| Date | Race | Distance | Time | Overall |
|---|---|---|---|---|
| 2025-05-18 | 2025 Life Time Chicago Spring Half & 10K | 10K | 40:48 | 16 |
| 2024-08-24 | 2024 Chicago Triathlon Sprint | 1:44:19 | 284 | |
| 2023-09-24 | Life Time Chicago Half Marathon + 5K presented by HOKA | Half Marathon | 1:33:07 | 200 |