| Fehmarnsund to Oestrich-Winkel | 335.09 mi (539.28 km) |
| Fehmarnsund to Offenburg | 435.84 mi (701.42 km) |
| Fehmarnsund to Oftersheim | 367.48 mi (591.40 km) |
| Fehmarnsund to Ohrdruf | 250.60 mi (403.30 km) |
| Fehmarnsund to Ohringen | 369.35 mi (594.40 km) |
| Fehmarnsund to Olbernhau | 276.41 mi (444.84 km) |
| Fehmarnsund to Olching | 431.56 mi (694.53 km) |
| Fehmarnsund to Oldenburg | 150.46 mi (242.14 km) |
| Fehmarnsund to Oldenburg in Holstein | 15.31 mi (24.63 km) |
| Fehmarnsund to Olfen | 245.38 mi (394.90 km) |
| Fehmarnsund to Olpe | 274.91 mi (442.42 km) |
| Fehmarnsund to Olsberg | 241.38 mi (388.46 km) |
| Fehmarnsund to Oranienburg | 144.32 mi (232.26 km) |
| Fehmarnsund to Ortenberg | 296.26 mi (476.79 km) |
| Fehmarnsund to Oschatz | 231.81 mi (373.06 km) |
