| Port-de-Bouc to Obernburg am Main | 486.14 mi (782.36 km) |
| Port-de-Bouc to Obernkirchen | 641.24 mi (1,031.98 km) |
| Port-de-Bouc to Oberschleissheim | 460.50 mi (741.10 km) |
| Port-de-Bouc to Oberstdorf | 377.21 mi (607.07 km) |
| Port-de-Bouc to Obertraubling | 514.83 mi (828.54 km) |
| Port-de-Bouc to Obertshausen | 494.81 mi (796.31 km) |
| Port-de-Bouc to Oberursel | 499.28 mi (803.51 km) |
| Port-de-Bouc to Ochsenfurt | 494.15 mi (795.26 km) |
| Port-de-Bouc to Ochsenhausen | 401.29 mi (645.82 km) |
| Port-de-Bouc to Ochtrup | 616.51 mi (992.18 km) |
| Port-de-Bouc to Odenthal | 536.38 mi (863.22 km) |
| Port-de-Bouc to Oelde | 600.51 mi (966.43 km) |
| Port-de-Bouc to Oelsnitz | 590.57 mi (950.44 km) |
| Port-de-Bouc to Oer-Erkenschwick | 578.76 mi (931.43 km) |
| Port-de-Bouc to Oerlinghausen | 615.59 mi (990.69 km) |
