| Calenzano to Oerlinghausen | 571.41 mi (919.60 km) |
| Calenzano to Oestrich-Winkel | 449.23 mi (722.96 km) |
| Calenzano to Offenburg | 353.41 mi (568.75 km) |
| Calenzano to Oftersheim | 399.47 mi (642.89 km) |
| Calenzano to Ohrdruf | 481.41 mi (774.76 km) |
| Calenzano to Ohringen | 376.89 mi (606.54 km) |
| Calenzano to Olbernhau | 480.63 mi (773.50 km) |
| Calenzano to Olching | 299.49 mi (481.98 km) |
| Calenzano to Oldenburg | 654.94 mi (1,054.03 km) |
| Calenzano to Oldenburg in Holstein | 720.98 mi (1,160.31 km) |
| Calenzano to Olfen | 569.90 mi (917.17 km) |
| Calenzano to Olpe | 517.85 mi (833.40 km) |
| Calenzano to Olsberg | 531.84 mi (855.92 km) |
| Calenzano to Oranienburg | 621.34 mi (999.94 km) |
| Calenzano to Ortenberg | 459.16 mi (738.95 km) |
