| Millau to Obernburg am Main | 488.61 mi (786.34 km) |
| Millau to Obernkirchen | 628.67 mi (1,011.75 km) |
| Millau to Oberschleissheim | 496.74 mi (799.42 km) |
| Millau to Oberstdorf | 415.49 mi (668.66 km) |
| Millau to Obertraubling | 546.83 mi (880.04 km) |
| Millau to Obertshausen | 492.97 mi (793.36 km) |
| Millau to Oberursel | 494.32 mi (795.53 km) |
| Millau to Ochsenfurt | 505.59 mi (813.67 km) |
| Millau to Ochsenhausen | 428.38 mi (689.41 km) |
| Millau to Ochtrup | 591.09 mi (951.27 km) |
| Millau to Odenthal | 514.60 mi (828.17 km) |
| Millau to Oelde | 583.30 mi (938.73 km) |
| Millau to Oelsnitz | 609.23 mi (980.47 km) |
| Millau to Oer-Erkenschwick | 555.70 mi (894.31 km) |
| Millau to Oerlinghausen | 601.40 mi (967.86 km) |
