| Ulas to Opwijk | 1,761.92 mi (2,835.53 km) |
| Ulas to Ostend | 1,819.47 mi (2,928.15 km) |
| Ulas to Oud-Heverlee | 1,739.21 mi (2,798.98 km) |
| Ulas to Oud-Turnhout | 1,734.88 mi (2,792.02 km) |
| Ulas to Oudenaarde | 1,784.60 mi (2,872.04 km) |
| Ulas to Oudenburg | 1,815.39 mi (2,921.58 km) |
| Ulas to Oupeye | 1,695.77 mi (2,729.08 km) |
| Ulas to Overijse | 1,743.96 mi (2,806.64 km) |
| Ulas to Overpelt | 1,714.96 mi (2,759.96 km) |
| Ulas to Paal | 1,721.71 mi (2,770.82 km) |
| Ulas to Peer | 1,711.79 mi (2,754.86 km) |
| Ulas to Pepinster | 1,685.81 mi (2,713.05 km) |
| Ulas to Peruwelz | 1,780.00 mi (2,864.64 km) |
| Ulas to Perwez | 1,729.27 mi (2,782.99 km) |
| Ulas to Philippeville | 1,733.52 mi (2,789.84 km) |
