| Porto Torres to Octeville | 778.15 mi (1,252.31 km) |
| Porto Torres to Oignies | 714.46 mi (1,149.81 km) |
| Porto Torres to Oissel | 686.62 mi (1,105.00 km) |
| Porto Torres to Olivet | 581.66 mi (936.10 km) |
| Porto Torres to Ollioules | 206.18 mi (331.81 km) |
| Porto Torres to Olonne-sur-Mer | 642.14 mi (1,033.43 km) |
| Porto Torres to Oloron-Sainte-Marie | 489.96 mi (788.51 km) |
| Porto Torres to Onet Village | 382.83 mi (616.10 km) |
| Porto Torres to Onnaing | 699.17 mi (1,125.20 km) |
| Porto Torres to Orange | 292.38 mi (470.53 km) |
| Porto Torres to Orchies | 710.52 mi (1,143.47 km) |
| Porto Torres to Orleans | 583.60 mi (939.22 km) |
| Porto Torres to Orly | 620.23 mi (998.17 km) |
| Porto Torres to Ormesson-sur-Marne | 619.41 mi (996.85 km) |
| Porto Torres to Orsay | 622.34 mi (1,001.56 km) |
