| Nafpaktos to Opwijk | 1,221.25 mi (1,965.41 km) |
| Nafpaktos to Ostend | 1,275.63 mi (2,052.92 km) |
| Nafpaktos to Oud-Heverlee | 1,199.06 mi (1,929.70 km) |
| Nafpaktos to Oud-Turnhout | 1,210.04 mi (1,947.38 km) |
| Nafpaktos to Oudenaarde | 1,236.39 mi (1,989.78 km) |
| Nafpaktos to Oudenburg | 1,271.07 mi (2,045.60 km) |
| Nafpaktos to Oupeye | 1,160.83 mi (1,868.18 km) |
| Nafpaktos to Overijse | 1,201.42 mi (1,933.49 km) |
| Nafpaktos to Overpelt | 1,191.41 mi (1,917.39 km) |
| Nafpaktos to Paal | 1,191.29 mi (1,917.20 km) |
| Nafpaktos to Peer | 1,186.37 mi (1,909.27 km) |
| Nafpaktos to Pepinster | 1,148.68 mi (1,848.62 km) |
| Nafpaktos to Peruwelz | 1,223.24 mi (1,968.61 km) |
| Nafpaktos to Perwez | 1,184.92 mi (1,906.94 km) |
| Nafpaktos to Philippeville | 1,176.00 mi (1,892.60 km) |
