| Castagneto Carducci to Oerlinghausen | 614.60 mi (989.11 km) |
| Castagneto Carducci to Oestrich-Winkel | 487.93 mi (785.25 km) |
| Castagneto Carducci to Offenburg | 387.99 mi (624.41 km) |
| Castagneto Carducci to Oftersheim | 439.28 mi (706.95 km) |
| Castagneto Carducci to Ohrdruf | 529.39 mi (851.97 km) |
| Castagneto Carducci to Ohringen | 420.16 mi (676.18 km) |
| Castagneto Carducci to Olbernhau | 533.91 mi (859.25 km) |
| Castagneto Carducci to Olching | 349.48 mi (562.43 km) |
| Castagneto Carducci to Oldenburg | 697.97 mi (1,123.28 km) |
| Castagneto Carducci to Oldenburg in Holstein | 769.34 mi (1,238.14 km) |
| Castagneto Carducci to Olfen | 609.41 mi (980.75 km) |
| Castagneto Carducci to Olpe | 557.67 mi (897.48 km) |
| Castagneto Carducci to Olsberg | 573.99 mi (923.75 km) |
| Castagneto Carducci to Oranienburg | 673.46 mi (1,083.84 km) |
| Castagneto Carducci to Ortenberg | 502.04 mi (807.95 km) |
