| Drammen to Oberkirch | 778.80 mi (1,253.36 km) |
| Drammen to Obernburg am Main | 685.16 mi (1,102.66 km) |
| Drammen to Obernkirchen | 517.91 mi (833.50 km) |
| Drammen to Oberschleissheim | 795.61 mi (1,280.41 km) |
| Drammen to Oberstdorf | 851.79 mi (1,370.83 km) |
| Drammen to Obertraubling | 748.37 mi (1,204.38 km) |
| Drammen to Obertshausen | 670.39 mi (1,078.89 km) |
| Drammen to Oberursel | 661.88 mi (1,065.18 km) |
| Drammen to Ochsenfurt | 697.02 mi (1,121.75 km) |
| Drammen to Ochsenhausen | 806.08 mi (1,297.26 km) |
| Drammen to Ochtrup | 533.18 mi (858.07 km) |
| Drammen to Odenthal | 613.35 mi (987.08 km) |
| Drammen to Oelde | 551.88 mi (888.17 km) |
| Drammen to Oelsnitz | 648.61 mi (1,043.84 km) |
| Drammen to Oer-Erkenschwick | 570.92 mi (918.80 km) |
