| Nafpaktos to Octeville | 1,391.84 mi (2,239.94 km) |
| Nafpaktos to Oignies | 1,242.41 mi (1,999.47 km) |
| Nafpaktos to Oissel | 1,273.39 mi (2,049.32 km) |
| Nafpaktos to Olivet | 1,193.72 mi (1,921.11 km) |
| Nafpaktos to Ollioules | 896.59 mi (1,442.92 km) |
| Nafpaktos to Olonne-sur-Mer | 1,321.31 mi (2,126.45 km) |
| Nafpaktos to Oloron-Sainte-Marie | 1,215.44 mi (1,956.06 km) |
| Nafpaktos to Onet Village | 1,076.01 mi (1,731.66 km) |
| Nafpaktos to Onnaing | 1,217.47 mi (1,959.33 km) |
| Nafpaktos to Orange | 966.57 mi (1,555.54 km) |
| Nafpaktos to Orchies | 1,233.63 mi (1,985.33 km) |
| Nafpaktos to Orleans | 1,194.54 mi (1,922.42 km) |
| Nafpaktos to Orly | 1,201.82 mi (1,934.14 km) |
| Nafpaktos to Ormesson-sur-Marne | 1,197.47 mi (1,927.14 km) |
| Nafpaktos to Orsay | 1,208.47 mi (1,944.84 km) |
