| San Giovanni Rotondo to Opwijk | 842.71 mi (1,356.22 km) |
| San Giovanni Rotondo to Ostend | 894.75 mi (1,439.97 km) |
| San Giovanni Rotondo to Oud-Heverlee | 821.37 mi (1,321.86 km) |
| San Giovanni Rotondo to Oud-Turnhout | 836.51 mi (1,346.23 km) |
| San Giovanni Rotondo to Oudenaarde | 855.41 mi (1,376.65 km) |
| San Giovanni Rotondo to Oudenburg | 890.20 mi (1,432.63 km) |
| San Giovanni Rotondo to Oupeye | 786.03 mi (1,265.00 km) |
| San Giovanni Rotondo to Overijse | 822.97 mi (1,324.44 km) |
| San Giovanni Rotondo to Overpelt | 818.99 mi (1,318.03 km) |
| San Giovanni Rotondo to Paal | 816.74 mi (1,314.42 km) |
| San Giovanni Rotondo to Peer | 813.55 mi (1,309.28 km) |
| San Giovanni Rotondo to Pepinster | 773.66 mi (1,245.09 km) |
| San Giovanni Rotondo to Peruwelz | 840.44 mi (1,352.55 km) |
| San Giovanni Rotondo to Perwez | 806.48 mi (1,297.91 km) |
| San Giovanni Rotondo to Philippeville | 794.25 mi (1,278.23 km) |
