| Upplands Vasby to Opwijk | 797.98 mi (1,284.22 km) |
| Upplands Vasby to Ostend | 818.00 mi (1,316.45 km) |
| Upplands Vasby to Oud-Heverlee | 792.91 mi (1,276.06 km) |
| Upplands Vasby to Oud-Turnhout | 757.84 mi (1,219.62 km) |
| Upplands Vasby to Oudenaarde | 819.79 mi (1,319.32 km) |
| Upplands Vasby to Oudenburg | 818.04 mi (1,316.50 km) |
| Upplands Vasby to Oupeye | 775.71 mi (1,248.39 km) |
| Upplands Vasby to Overijse | 799.11 mi (1,286.05 km) |
| Upplands Vasby to Overpelt | 752.38 mi (1,210.84 km) |
| Upplands Vasby to Paal | 768.51 mi (1,236.79 km) |
| Upplands Vasby to Peer | 756.18 mi (1,216.96 km) |
| Upplands Vasby to Pepinster | 779.72 mi (1,254.84 km) |
| Upplands Vasby to Peruwelz | 838.59 mi (1,349.58 km) |
| Upplands Vasby to Perwez | 800.95 mi (1,289.00 km) |
| Upplands Vasby to Philippeville | 831.70 mi (1,338.49 km) |
