| Saint-Omer to Obernburg am Main | 310.00 mi (498.90 km) |
| Saint-Omer to Obernkirchen | 312.83 mi (503.46 km) |
| Saint-Omer to Oberschleissheim | 451.45 mi (726.55 km) |
| Saint-Omer to Oberstdorf | 429.64 mi (691.44 km) |
| Saint-Omer to Obertraubling | 457.73 mi (736.64 km) |
| Saint-Omer to Obertshausen | 293.12 mi (471.74 km) |
| Saint-Omer to Oberursel | 280.18 mi (450.91 km) |
| Saint-Omer to Ochsenfurt | 353.30 mi (568.58 km) |
| Saint-Omer to Ochsenhausen | 391.66 mi (630.32 km) |
| Saint-Omer to Ochtrup | 234.75 mi (377.79 km) |
| Saint-Omer to Odenthal | 212.51 mi (342.01 km) |
| Saint-Omer to Oelde | 265.19 mi (426.78 km) |
| Saint-Omer to Oelsnitz | 434.87 mi (699.85 km) |
| Saint-Omer to Oer-Erkenschwick | 224.66 mi (361.56 km) |
| Saint-Omer to Oerlinghausen | 288.81 mi (464.80 km) |
