| Gardanne to Oestrich-Winkel | 467.65 mi (752.62 km) |
| Gardanne to Offenburg | 365.76 mi (588.64 km) |
| Gardanne to Oftersheim | 434.61 mi (699.44 km) |
| Gardanne to Ohrdruf | 565.80 mi (910.57 km) |
| Gardanne to Ohringen | 440.76 mi (709.33 km) |
| Gardanne to Olbernhau | 619.77 mi (997.42 km) |
| Gardanne to Olching | 431.65 mi (694.67 km) |
| Gardanne to Oldenburg | 681.01 mi (1,095.98 km) |
| Gardanne to Oldenburg in Holstein | 787.97 mi (1,268.12 km) |
| Gardanne to Olfen | 577.63 mi (929.61 km) |
| Gardanne to Olpe | 533.94 mi (859.30 km) |
| Gardanne to Olsberg | 563.18 mi (906.35 km) |
| Gardanne to Oranienburg | 734.57 mi (1,182.17 km) |
| Gardanne to Ortenberg | 505.67 mi (813.81 km) |
| Gardanne to Oschatz | 648.29 mi (1,043.32 km) |
