| Saint-Gregoire to Obernburg am Main | 504.04 mi (811.17 km) |
| Saint-Gregoire to Obernkirchen | 555.12 mi (893.39 km) |
| Saint-Gregoire to Oberschleissheim | 609.60 mi (981.06 km) |
| Saint-Gregoire to Oberstdorf | 557.32 mi (896.92 km) |
| Saint-Gregoire to Obertraubling | 635.10 mi (1,022.09 km) |
| Saint-Gregoire to Obertshausen | 493.38 mi (794.03 km) |
| Saint-Gregoire to Oberursel | 484.30 mi (779.40 km) |
| Saint-Gregoire to Ochsenfurt | 543.17 mi (874.14 km) |
| Saint-Gregoire to Ochsenhausen | 536.23 mi (862.98 km) |
| Saint-Gregoire to Ochtrup | 481.88 mi (775.52 km) |
| Saint-Gregoire to Odenthal | 441.31 mi (710.21 km) |
| Saint-Gregoire to Oelde | 504.98 mi (812.68 km) |
| Saint-Gregoire to Oelsnitz | 642.63 mi (1,034.21 km) |
| Saint-Gregoire to Oer-Erkenschwick | 464.71 mi (747.87 km) |
| Saint-Gregoire to Oerlinghausen | 528.81 mi (851.04 km) |
