| Gardanne to Obernburg am Main | 474.01 mi (762.85 km) |
| Gardanne to Obernkirchen | 631.55 mi (1,016.38 km) |
| Gardanne to Oberschleissheim | 442.05 mi (711.41 km) |
| Gardanne to Oberstdorf | 358.86 mi (577.54 km) |
| Gardanne to Obertraubling | 496.90 mi (799.68 km) |
| Gardanne to Obertshausen | 483.52 mi (778.15 km) |
| Gardanne to Oberursel | 488.63 mi (786.37 km) |
| Gardanne to Ochsenfurt | 480.16 mi (772.75 km) |
| Gardanne to Ochsenhausen | 384.85 mi (619.35 km) |
| Gardanne to Ochtrup | 609.75 mi (981.29 km) |
| Gardanne to Odenthal | 529.18 mi (851.63 km) |
| Gardanne to Oelde | 591.99 mi (952.71 km) |
| Gardanne to Oelsnitz | 574.79 mi (925.03 km) |
| Gardanne to Oer-Erkenschwick | 571.64 mi (919.96 km) |
| Gardanne to Oerlinghausen | 606.34 mi (975.82 km) |
