| Altopascio to Oerlinghausen | 570.75 mi (918.53 km) |
| Altopascio to Oestrich-Winkel | 445.53 mi (717.00 km) |
| Altopascio to Offenburg | 347.15 mi (558.68 km) |
| Altopascio to Oftersheim | 396.42 mi (637.97 km) |
| Altopascio to Ohrdruf | 484.45 mi (779.64 km) |
| Altopascio to Ohringen | 376.17 mi (605.39 km) |
| Altopascio to Olbernhau | 489.25 mi (787.38 km) |
| Altopascio to Olching | 304.38 mi (489.84 km) |
| Altopascio to Oldenburg | 654.19 mi (1,052.82 km) |
| Altopascio to Oldenburg in Holstein | 724.38 mi (1,165.78 km) |
| Altopascio to Olfen | 566.79 mi (912.16 km) |
| Altopascio to Olpe | 514.90 mi (828.65 km) |
| Altopascio to Olsberg | 530.44 mi (853.66 km) |
| Altopascio to Oranienburg | 628.49 mi (1,011.46 km) |
| Altopascio to Ortenberg | 458.22 mi (737.44 km) |
