| Colonia to Opwijk | 3,667.03 mi (5,901.51 km) |
| Colonia to Ostend | 3,609.41 mi (5,808.78 km) |
| Colonia to Oud-Heverlee | 3,690.00 mi (5,938.49 km) |
| Colonia to Oud-Turnhout | 3,690.39 mi (5,939.11 km) |
| Colonia to Oudenaarde | 3,646.28 mi (5,868.12 km) |
| Colonia to Oudenburg | 3,613.71 mi (5,815.70 km) |
| Colonia to Oupeye | 3,732.78 mi (6,007.32 km) |
| Colonia to Overijse | 3,685.88 mi (5,931.85 km) |
| Colonia to Overpelt | 3,710.36 mi (5,971.24 km) |
| Colonia to Paal | 3,705.14 mi (5,962.85 km) |
| Colonia to Peer | 3,714.01 mi (5,977.13 km) |
| Colonia to Pepinster | 3,743.56 mi (6,024.67 km) |
| Colonia to Peruwelz | 3,653.95 mi (5,880.47 km) |
| Colonia to Perwez | 3,701.42 mi (5,956.86 km) |
| Colonia to Philippeville | 3,701.64 mi (5,957.22 km) |
