| Saint-Louis to Obernburg am Main | 171.16 mi (275.46 km) |
| Saint-Louis to Obernkirchen | 330.34 mi (531.63 km) |
| Saint-Louis to Oberschleissheim | 190.57 mi (306.70 km) |
| Saint-Louis to Oberstdorf | 127.07 mi (204.50 km) |
| Saint-Louis to Obertraubling | 231.72 mi (372.91 km) |
| Saint-Louis to Obertshausen | 180.51 mi (290.50 km) |
| Saint-Louis to Oberursel | 186.26 mi (299.76 km) |
| Saint-Louis to Ochsenfurt | 182.36 mi (293.48 km) |
| Saint-Louis to Ochsenhausen | 115.22 mi (185.43 km) |
| Saint-Louis to Ochtrup | 319.35 mi (513.95 km) |
| Saint-Louis to Odenthal | 238.78 mi (384.28 km) |
| Saint-Louis to Oelde | 294.32 mi (473.67 km) |
| Saint-Louis to Oelsnitz | 285.48 mi (459.43 km) |
| Saint-Louis to Oer-Erkenschwick | 280.34 mi (451.17 km) |
| Saint-Louis to Oerlinghausen | 306.32 mi (492.98 km) |
