| Boulogne-Billancourt to Obernburg am Main | 318.21 mi (512.10 km) |
| Boulogne-Billancourt to Obernkirchen | 383.59 mi (617.32 km) |
| Boulogne-Billancourt to Oberschleissheim | 428.24 mi (689.19 km) |
| Boulogne-Billancourt to Oberstdorf | 383.40 mi (617.02 km) |
| Boulogne-Billancourt to Obertraubling | 450.61 mi (725.18 km) |
| Boulogne-Billancourt to Obertshausen | 307.98 mi (495.64 km) |
| Boulogne-Billancourt to Oberursel | 299.40 mi (481.83 km) |
| Boulogne-Billancourt to Ochsenfurt | 357.30 mi (575.01 km) |
| Boulogne-Billancourt to Ochsenhausen | 356.93 mi (574.42 km) |
| Boulogne-Billancourt to Ochtrup | 318.45 mi (512.50 km) |
| Boulogne-Billancourt to Odenthal | 264.65 mi (425.91 km) |
| Boulogne-Billancourt to Oelde | 332.73 mi (535.47 km) |
| Boulogne-Billancourt to Oelsnitz | 457.11 mi (735.64 km) |
| Boulogne-Billancourt to Oer-Erkenschwick | 294.21 mi (473.49 km) |
| Boulogne-Billancourt to Oerlinghausen | 356.01 mi (572.95 km) |
