| Cortona to Oberkirch | 408.78 mi (657.87 km) |
| Cortona to Obernburg am Main | 473.20 mi (761.54 km) |
| Cortona to Obernkirchen | 635.21 mi (1,022.27 km) |
| Cortona to Oberschleissheim | 344.30 mi (554.09 km) |
| Cortona to Oberstdorf | 297.43 mi (478.67 km) |
| Cortona to Obertraubling | 393.25 mi (632.87 km) |
| Cortona to Obertshausen | 492.36 mi (792.38 km) |
| Cortona to Oberursel | 505.03 mi (812.77 km) |
| Cortona to Ochsenfurt | 449.78 mi (723.85 km) |
| Cortona to Ochsenhausen | 345.70 mi (556.35 km) |
| Cortona to Ochtrup | 655.67 mi (1,055.20 km) |
| Cortona to Odenthal | 582.51 mi (937.45 km) |
| Cortona to Oelde | 617.55 mi (993.84 km) |
| Cortona to Oelsnitz | 493.47 mi (794.17 km) |
| Cortona to Oer-Erkenschwick | 618.66 mi (995.63 km) |
