| Castenaso to Oberkirch | 321.20 mi (516.92 km) |
| Castenaso to Obernburg am Main | 384.14 mi (618.21 km) |
| Castenaso to Obernkirchen | 546.62 mi (879.70 km) |
| Castenaso to Oberschleissheim | 258.47 mi (415.97 km) |
| Castenaso to Oberstdorf | 208.37 mi (335.35 km) |
| Castenaso to Obertraubling | 309.64 mi (498.32 km) |
| Castenaso to Obertshausen | 403.29 mi (649.03 km) |
| Castenaso to Oberursel | 415.97 mi (669.44 km) |
| Castenaso to Ochsenfurt | 361.23 mi (581.35 km) |
| Castenaso to Ochsenhausen | 256.64 mi (413.02 km) |
| Castenaso to Ochtrup | 566.63 mi (911.90 km) |
| Castenaso to Odenthal | 493.79 mi (794.67 km) |
| Castenaso to Oelde | 528.49 mi (850.53 km) |
| Castenaso to Oelsnitz | 409.42 mi (658.90 km) |
| Castenaso to Oer-Erkenschwick | 529.69 mi (852.45 km) |
