| Nea Smyrni to Opwijk | 1,310.28 mi (2,108.70 km) |
| Nea Smyrni to Ostend | 1,365.49 mi (2,197.55 km) |
| Nea Smyrni to Oud-Heverlee | 1,287.83 mi (2,072.56 km) |
| Nea Smyrni to Oud-Turnhout | 1,297.09 mi (2,087.47 km) |
| Nea Smyrni to Oudenaarde | 1,326.44 mi (2,134.69 km) |
| Nea Smyrni to Oudenburg | 1,360.96 mi (2,190.25 km) |
| Nea Smyrni to Oupeye | 1,248.61 mi (2,009.44 km) |
| Nea Smyrni to Overijse | 1,290.49 mi (2,076.85 km) |
| Nea Smyrni to Overpelt | 1,278.12 mi (2,056.93 km) |
| Nea Smyrni to Paal | 1,278.83 mi (2,058.08 km) |
| Nea Smyrni to Peer | 1,273.25 mi (2,049.10 km) |
| Nea Smyrni to Pepinster | 1,236.59 mi (1,990.10 km) |
| Nea Smyrni to Peruwelz | 1,314.16 mi (2,114.93 km) |
| Nea Smyrni to Perwez | 1,274.05 mi (2,050.39 km) |
| Nea Smyrni to Philippeville | 1,266.60 mi (2,038.40 km) |
