| Cortona to Oerlinghausen | 619.93 mi (997.67 km) |
| Cortona to Oestrich-Winkel | 501.47 mi (807.04 km) |
| Cortona to Offenburg | 408.14 mi (656.84 km) |
| Cortona to Oftersheim | 451.23 mi (726.18 km) |
| Cortona to Ohrdruf | 525.14 mi (845.13 km) |
| Cortona to Ohringen | 426.19 mi (685.89 km) |
| Cortona to Olbernhau | 514.57 mi (828.13 km) |
| Cortona to Olching | 341.78 mi (550.04 km) |
| Cortona to Oldenburg | 703.37 mi (1,131.97 km) |
| Cortona to Oldenburg in Holstein | 763.35 mi (1,228.49 km) |
| Cortona to Olfen | 621.26 mi (999.82 km) |
| Cortona to Olpe | 569.14 mi (915.95 km) |
| Cortona to Olsberg | 581.37 mi (935.62 km) |
| Cortona to Oranienburg | 657.43 mi (1,058.04 km) |
| Cortona to Ortenberg | 508.36 mi (818.13 km) |
