| Mercogliano to Opwijk | 857.78 mi (1,380.46 km) |
| Mercogliano to Ostend | 907.54 mi (1,460.55 km) |
| Mercogliano to Oud-Heverlee | 837.26 mi (1,347.43 km) |
| Mercogliano to Oud-Turnhout | 855.19 mi (1,376.30 km) |
| Mercogliano to Oudenaarde | 868.42 mi (1,397.58 km) |
| Mercogliano to Oudenburg | 903.01 mi (1,453.26 km) |
| Mercogliano to Oupeye | 804.34 mi (1,294.46 km) |
| Mercogliano to Overijse | 838.27 mi (1,349.07 km) |
| Mercogliano to Overpelt | 838.56 mi (1,349.53 km) |
| Mercogliano to Paal | 834.92 mi (1,343.67 km) |
| Mercogliano to Peer | 832.92 mi (1,340.45 km) |
| Mercogliano to Pepinster | 791.95 mi (1,274.52 km) |
| Mercogliano to Peruwelz | 851.98 mi (1,371.13 km) |
| Mercogliano to Perwez | 821.95 mi (1,322.80 km) |
| Mercogliano to Philippeville | 807.13 mi (1,298.94 km) |
