| Porto Torres to Opwijk | 728.38 mi (1,172.21 km) |
| Porto Torres to Ostend | 763.91 mi (1,229.40 km) |
| Porto Torres to Oud-Heverlee | 713.46 mi (1,148.19 km) |
| Porto Torres to Oud-Turnhout | 742.17 mi (1,194.41 km) |
| Porto Torres to Oudenaarde | 729.01 mi (1,173.23 km) |
| Porto Torres to Oudenburg | 759.88 mi (1,222.91 km) |
| Porto Torres to Oupeye | 694.75 mi (1,118.09 km) |
| Porto Torres to Overijse | 711.77 mi (1,145.48 km) |
| Porto Torres to Overpelt | 731.16 mi (1,176.70 km) |
| Porto Torres to Paal | 721.59 mi (1,161.29 km) |
| Porto Torres to Peer | 725.16 mi (1,167.03 km) |
| Porto Torres to Pepinster | 683.62 mi (1,100.18 km) |
| Porto Torres to Peruwelz | 707.71 mi (1,138.95 km) |
| Porto Torres to Perwez | 697.78 mi (1,122.97 km) |
| Porto Torres to Philippeville | 673.02 mi (1,083.12 km) |
