| Cassano al Ionio to Oberkirch | 728.48 mi (1,172.37 km) |
| Cassano al Ionio to Obernburg am Main | 777.93 mi (1,251.96 km) |
| Cassano al Ionio to Obernkirchen | 927.96 mi (1,493.40 km) |
| Cassano al Ionio to Oberschleissheim | 630.49 mi (1,014.68 km) |
| Cassano al Ionio to Oberstdorf | 606.95 mi (976.79 km) |
| Cassano al Ionio to Obertraubling | 666.46 mi (1,072.57 km) |
| Cassano al Ionio to Obertshausen | 798.32 mi (1,284.78 km) |
| Cassano al Ionio to Oberursel | 812.20 mi (1,307.11 km) |
| Cassano al Ionio to Ochsenfurt | 746.96 mi (1,202.11 km) |
| Cassano al Ionio to Ochsenhausen | 654.00 mi (1,052.51 km) |
| Cassano al Ionio to Ochtrup | 961.87 mi (1,547.98 km) |
| Cassano al Ionio to Odenthal | 894.71 mi (1,439.90 km) |
| Cassano al Ionio to Oelde | 919.44 mi (1,479.69 km) |
| Cassano al Ionio to Oelsnitz | 761.75 mi (1,225.92 km) |
| Cassano al Ionio to Oer-Erkenschwick | 927.16 mi (1,492.12 km) |
