All available race results Killian O'Brien
No results available in season 2023.
Rider information for 2023
| Rank | 1467 |
| Score | 18 |
| Name | Killian O'BRIEN |
| Country | Ireland |
| Team | Elite without contract |
No results available in season 2024.
Rider information for 2024
| Rank | 4424 |
| Score | 1 |
| Name | Killian O'BRIEN |
| Country | Ireland |
| Team | Elite without contract |
| Date | Race | Rank |
| 18/05 | Circuito del Porto - Trofeo Arvedi | 121 |
| Sibiu Cycling Tour | ||
| 03/07 | Stage 1 | 64 |
| 04/07 | Stage 2 | 33 |
| 05/07 | Stage 3 | 35 |
| 06/07 | Stage 4 | 99 |
| General Classification | 33 | |
| 10/09 | Giro della Toscana - Memorial Alfredo Martini | 82 |
| 12/10 | Trofeo Tessile e Moda - Valdengo-Oropa | 57 |
| 15/10 | Giro del Veneto | 73 |
Rider information for 2025
| Rank | 3798 |
| Score | 2 |
| Name | Killian O'BRIEN |
| Country | Ireland |
| Team | Petrolike |
| Date | Race | Rank |
| 30/08 | Philadelphia Cycling Classic | 38 |
Rider information for 2026
| Rank | 1747 |
| Score | 4 |
| Name | Killian O'BRIEN |
| Country | Ireland |
| Team | Team Skyline |