| Alexandroupoli to Opwijk | 1,247.68 mi (2,007.95 km) |
| Alexandroupoli to Ostend | 1,304.95 mi (2,100.12 km) |
| Alexandroupoli to Oud-Heverlee | 1,224.71 mi (1,970.98 km) |
| Alexandroupoli to Oud-Turnhout | 1,227.61 mi (1,975.65 km) |
| Alexandroupoli to Oudenaarde | 1,267.31 mi (2,039.53 km) |
| Alexandroupoli to Oudenburg | 1,300.56 mi (2,093.06 km) |
| Alexandroupoli to Oupeye | 1,182.71 mi (1,903.38 km) |
| Alexandroupoli to Overijse | 1,228.44 mi (1,976.98 km) |
| Alexandroupoli to Overpelt | 1,207.83 mi (1,943.82 km) |
| Alexandroupoli to Paal | 1,211.43 mi (1,949.61 km) |
| Alexandroupoli to Peer | 1,203.68 mi (1,937.13 km) |
| Alexandroupoli to Pepinster | 1,171.46 mi (1,885.29 km) |
| Alexandroupoli to Peruwelz | 1,258.64 mi (2,025.59 km) |
| Alexandroupoli to Perwez | 1,212.56 mi (1,951.43 km) |
| Alexandroupoli to Philippeville | 1,210.83 mi (1,948.64 km) |
