| Frederikssund to Obernburg am Main | 431.62 mi (694.63 km) |
| Frederikssund to Obernkirchen | 273.88 mi (440.77 km) |
| Frederikssund to Oberschleissheim | 524.38 mi (843.91 km) |
| Frederikssund to Oberstdorf | 586.99 mi (944.67 km) |
| Frederikssund to Obertraubling | 474.52 mi (763.66 km) |
| Frederikssund to Obertshausen | 420.44 mi (676.63 km) |
| Frederikssund to Oberursel | 415.02 mi (667.92 km) |
| Frederikssund to Ochsenfurt | 435.29 mi (700.53 km) |
| Frederikssund to Ochsenhausen | 543.71 mi (875.01 km) |
| Frederikssund to Ochtrup | 319.22 mi (513.74 km) |
| Frederikssund to Odenthal | 389.01 mi (626.06 km) |
| Frederikssund to Oelde | 319.08 mi (513.51 km) |
| Frederikssund to Oelsnitz | 374.27 mi (602.34 km) |
| Frederikssund to Oer-Erkenschwick | 349.94 mi (563.18 km) |
| Frederikssund to Oerlinghausen | 300.79 mi (484.08 km) |
