| Altenstadt to Opwijk | 213.91 mi (344.25 km) |
| Altenstadt to Ostend | 271.19 mi (436.43 km) |
| Altenstadt to Oud-Heverlee | 191.53 mi (308.25 km) |
| Altenstadt to Oud-Turnhout | 187.06 mi (301.05 km) |
| Altenstadt to Oudenaarde | 237.73 mi (382.59 km) |
| Altenstadt to Oudenburg | 267.19 mi (430.00 km) |
| Altenstadt to Oupeye | 148.02 mi (238.21 km) |
| Altenstadt to Overijse | 196.74 mi (316.63 km) |
| Altenstadt to Overpelt | 167.10 mi (268.91 km) |
| Altenstadt to Paal | 173.20 mi (278.74 km) |
| Altenstadt to Peer | 163.57 mi (263.24 km) |
| Altenstadt to Pepinster | 139.05 mi (223.78 km) |
| Altenstadt to Peruwelz | 236.62 mi (380.80 km) |
| Altenstadt to Perwez | 183.16 mi (294.76 km) |
| Altenstadt to Philippeville | 194.27 mi (312.64 km) |
