| Barmstedt to Opwijk | 305.36 mi (491.43 km) |
| Barmstedt to Ostend | 337.65 mi (543.40 km) |
| Barmstedt to Oud-Heverlee | 296.45 mi (477.09 km) |
| Barmstedt to Oud-Turnhout | 263.40 mi (423.90 km) |
| Barmstedt to Oudenaarde | 329.83 mi (530.80 km) |
| Barmstedt to Oudenburg | 336.45 mi (541.46 km) |
| Barmstedt to Oupeye | 274.81 mi (442.26 km) |
| Barmstedt to Overijse | 303.00 mi (487.63 km) |
| Barmstedt to Overpelt | 254.72 mi (409.93 km) |
| Barmstedt to Paal | 270.88 mi (435.95 km) |
| Barmstedt to Peer | 257.81 mi (414.90 km) |
| Barmstedt to Pepinster | 278.13 mi (447.60 km) |
| Barmstedt to Peruwelz | 345.70 mi (556.35 km) |
| Barmstedt to Perwez | 302.53 mi (486.88 km) |
| Barmstedt to Philippeville | 332.33 mi (534.83 km) |
