| Altopascio to Oberkirch | 348.76 mi (561.28 km) |
| Altopascio to Obernburg am Main | 422.48 mi (679.91 km) |
| Altopascio to Obernkirchen | 588.24 mi (946.68 km) |
| Altopascio to Oberschleissheim | 309.22 mi (497.65 km) |
| Altopascio to Oberstdorf | 249.02 mi (400.76 km) |
| Altopascio to Obertraubling | 362.71 mi (583.72 km) |
| Altopascio to Obertshausen | 440.52 mi (708.96 km) |
| Altopascio to Oberursel | 452.24 mi (727.81 km) |
| Altopascio to Ochsenfurt | 404.09 mi (650.33 km) |
| Altopascio to Ochsenhausen | 296.14 mi (476.59 km) |
| Altopascio to Ochtrup | 601.50 mi (968.02 km) |
| Altopascio to Odenthal | 525.59 mi (845.85 km) |
| Altopascio to Oelde | 566.13 mi (911.10 km) |
| Altopascio to Oelsnitz | 461.29 mi (742.38 km) |
| Altopascio to Oer-Erkenschwick | 563.56 mi (906.97 km) |
