| Alcamo to Opwijk | 994.74 mi (1,600.89 km) |
| Alcamo to Ostend | 1,038.00 mi (1,670.50 km) |
| Alcamo to Oud-Heverlee | 976.63 mi (1,571.73 km) |
| Alcamo to Oud-Turnhout | 1,000.22 mi (1,609.69 km) |
| Alcamo to Oudenaarde | 1,000.42 mi (1,610.03 km) |
| Alcamo to Oudenburg | 1,033.66 mi (1,663.52 km) |
| Alcamo to Oupeye | 949.93 mi (1,528.76 km) |
| Alcamo to Overijse | 976.31 mi (1,571.23 km) |
| Alcamo to Overpelt | 985.94 mi (1,586.71 km) |
| Alcamo to Paal | 979.38 mi (1,576.17 km) |
| Alcamo to Peer | 980.01 mi (1,577.17 km) |
| Alcamo to Pepinster | 937.86 mi (1,509.33 km) |
| Alcamo to Peruwelz | 981.11 mi (1,578.94 km) |
| Alcamo to Perwez | 960.82 mi (1,546.29 km) |
| Alcamo to Philippeville | 940.64 mi (1,513.82 km) |
