| Leiria to Opwijk | 995.94 mi (1,602.82 km) |
| Leiria to Ostend | 972.59 mi (1,565.24 km) |
| Leiria to Oud-Heverlee | 1,004.22 mi (1,616.13 km) |
| Leiria to Oud-Turnhout | 1,037.49 mi (1,669.68 km) |
| Leiria to Oudenaarde | 972.64 mi (1,565.31 km) |
| Leiria to Oudenburg | 972.60 mi (1,565.24 km) |
| Leiria to Oupeye | 1,029.46 mi (1,656.75 km) |
| Leiria to Overijse | 997.65 mi (1,605.56 km) |
| Leiria to Overpelt | 1,046.06 mi (1,683.47 km) |
| Leiria to Paal | 1,029.94 mi (1,657.53 km) |
| Leiria to Peer | 1,043.23 mi (1,678.91 km) |
| Leiria to Pepinster | 1,028.70 mi (1,655.53 km) |
| Leiria to Peruwelz | 955.34 mi (1,537.48 km) |
| Leiria to Perwez | 998.84 mi (1,607.48 km) |
| Leiria to Philippeville | 970.26 mi (1,561.49 km) |
