| Enniskillen to Opwijk | 546.81 mi (880.01 km) |
| Enniskillen to Ostend | 490.36 mi (789.16 km) |
| Enniskillen to Oud-Heverlee | 569.66 mi (916.79 km) |
| Enniskillen to Oud-Turnhout | 565.94 mi (910.79 km) |
| Enniskillen to Oudenaarde | 529.06 mi (851.45 km) |
| Enniskillen to Oudenburg | 494.86 mi (796.40 km) |
| Enniskillen to Oupeye | 611.01 mi (983.32 km) |
| Enniskillen to Overijse | 566.37 mi (911.48 km) |
| Enniskillen to Overpelt | 585.78 mi (942.72 km) |
| Enniskillen to Paal | 582.04 mi (936.70 km) |
| Enniskillen to Peer | 589.83 mi (949.25 km) |
| Enniskillen to Pepinster | 622.46 mi (1,001.76 km) |
| Enniskillen to Peruwelz | 540.84 mi (870.40 km) |
| Enniskillen to Perwez | 582.59 mi (937.58 km) |
| Enniskillen to Philippeville | 588.43 mi (946.99 km) |
