| Kasterlee to Ostend | 87.85 mi (141.39 km) |
| Kasterlee to Oud-Heverlee | 31.31 mi (50.39 km) |
| Kasterlee to Oud-Turnhout | 4.83 mi (7.77 km) |
| Kasterlee to Oudenaarde | 64.82 mi (104.32 km) |
| Kasterlee to Oudenburg | 84.52 mi (136.02 km) |
| Kasterlee to Oupeye | 48.06 mi (77.35 km) |
| Kasterlee to Overijse | 36.98 mi (59.52 km) |
| Kasterlee to Overpelt | 20.32 mi (32.70 km) |
| Kasterlee to Paal | 17.48 mi (28.12 km) |
| Kasterlee to Peer | 23.26 mi (37.44 km) |
| Kasterlee to Pepinster | 60.45 mi (97.29 km) |
| Kasterlee to Peruwelz | 78.20 mi (125.86 km) |
| Kasterlee to Perwez | 43.64 mi (70.24 km) |
| Kasterlee to Philippeville | 74.63 mi (120.10 km) |
| Kasterlee to Plombieres | 56.27 mi (90.55 km) |
