| Barmstedt to Oestrich-Winkel | 272.02 mi (437.77 km) |
| Barmstedt to Offenburg | 375.81 mi (604.81 km) |
| Barmstedt to Oftersheim | 309.07 mi (497.40 km) |
| Barmstedt to Ohrdruf | 208.22 mi (335.10 km) |
| Barmstedt to Ohringen | 316.88 mi (509.97 km) |
| Barmstedt to Olbernhau | 262.90 mi (423.10 km) |
| Barmstedt to Olching | 391.59 mi (630.20 km) |
| Barmstedt to Oldenburg | 77.66 mi (124.98 km) |
| Barmstedt to Oldenburg in Holstein | 57.68 mi (92.82 km) |
| Barmstedt to Olfen | 174.12 mi (280.21 km) |
| Barmstedt to Olpe | 207.79 mi (334.40 km) |
| Barmstedt to Olsberg | 176.55 mi (284.12 km) |
| Barmstedt to Oranienburg | 160.03 mi (257.54 km) |
| Barmstedt to Ortenberg | 238.73 mi (384.20 km) |
| Barmstedt to Oschatz | 221.62 mi (356.66 km) |
