| Ferrara to Oerlinghausen | 511.00 mi (822.37 km) |
| Ferrara to Oestrich-Winkel | 394.89 mi (635.51 km) |
| Ferrara to Offenburg | 305.77 mi (492.08 km) |
| Ferrara to Oftersheim | 344.33 mi (554.15 km) |
| Ferrara to Ohrdruf | 416.22 mi (669.84 km) |
| Ferrara to Ohringen | 317.72 mi (511.33 km) |
| Ferrara to Olbernhau | 410.83 mi (661.17 km) |
| Ferrara to Olching | 233.05 mi (375.06 km) |
| Ferrara to Oldenburg | 594.39 mi (956.59 km) |
| Ferrara to Oldenburg in Holstein | 654.90 mi (1,053.96 km) |
| Ferrara to Olfen | 513.68 mi (826.68 km) |
| Ferrara to Olpe | 461.59 mi (742.86 km) |
| Ferrara to Olsberg | 472.80 mi (760.89 km) |
| Ferrara to Oranienburg | 552.20 mi (888.68 km) |
| Ferrara to Ortenberg | 399.73 mi (643.31 km) |
