| Outreau to Obernburg am Main | 338.45 mi (544.68 km) |
| Outreau to Obernkirchen | 341.06 mi (548.88 km) |
| Outreau to Oberschleissheim | 478.27 mi (769.71 km) |
| Outreau to Oberstdorf | 453.95 mi (730.56 km) |
| Outreau to Obertraubling | 485.78 mi (781.78 km) |
| Outreau to Obertshausen | 321.83 mi (517.93 km) |
| Outreau to Oberursel | 309.02 mi (497.32 km) |
| Outreau to Ochsenfurt | 381.69 mi (614.27 km) |
| Outreau to Ochsenhausen | 417.09 mi (671.25 km) |
| Outreau to Ochtrup | 262.25 mi (422.05 km) |
| Outreau to Odenthal | 241.84 mi (389.20 km) |
| Outreau to Oelde | 293.85 mi (472.90 km) |
| Outreau to Oelsnitz | 464.10 mi (746.89 km) |
| Outreau to Oer-Erkenschwick | 253.41 mi (407.83 km) |
| Outreau to Oerlinghausen | 317.39 mi (510.78 km) |
