| Alzano Lombardo to Oberkirch | 208.44 mi (335.44 km) |
| Alzano Lombardo to Obernburg am Main | 285.16 mi (458.92 km) |
| Alzano Lombardo to Obernkirchen | 452.35 mi (727.98 km) |
| Alzano Lombardo to Oberschleissheim | 194.36 mi (312.78 km) |
| Alzano Lombardo to Oberstdorf | 118.85 mi (191.27 km) |
| Alzano Lombardo to Obertraubling | 250.89 mi (403.76 km) |
| Alzano Lombardo to Obertshausen | 302.37 mi (486.62 km) |
| Alzano Lombardo to Oberursel | 313.51 mi (504.54 km) |
| Alzano Lombardo to Ochsenfurt | 271.18 mi (436.43 km) |
| Alzano Lombardo to Ochsenhausen | 162.04 mi (260.79 km) |
| Alzano Lombardo to Ochtrup | 461.81 mi (743.20 km) |
| Alzano Lombardo to Odenthal | 385.35 mi (620.16 km) |
| Alzano Lombardo to Oelde | 427.63 mi (688.21 km) |
| Alzano Lombardo to Oelsnitz | 342.66 mi (551.46 km) |
| Alzano Lombardo to Oer-Erkenschwick | 423.66 mi (681.82 km) |
