| Dorchester to Opwijk | 289.26 mi (465.52 km) |
| Dorchester to Ostend | 235.64 mi (379.22 km) |
| Dorchester to Oud-Heverlee | 310.36 mi (499.47 km) |
| Dorchester to Oud-Turnhout | 325.05 mi (523.11 km) |
| Dorchester to Oudenaarde | 263.80 mi (424.55 km) |
| Dorchester to Oudenburg | 238.80 mi (384.31 km) |
| Dorchester to Oupeye | 353.33 mi (568.62 km) |
| Dorchester to Overijse | 304.63 mi (490.25 km) |
| Dorchester to Overpelt | 343.31 mi (552.51 km) |
| Dorchester to Paal | 332.35 mi (534.87 km) |
| Dorchester to Peer | 344.69 mi (554.72 km) |
| Dorchester to Pepinster | 361.60 mi (581.94 km) |
| Dorchester to Peruwelz | 264.20 mi (425.20 km) |
| Dorchester to Perwez | 317.49 mi (510.95 km) |
| Dorchester to Philippeville | 309.27 mi (497.72 km) |
