| Castagneto Carducci to Octeville | 733.04 mi (1,179.72 km) |
| Castagneto Carducci to Oignies | 618.91 mi (996.03 km) |
| Castagneto Carducci to Oissel | 622.34 mi (1,001.56 km) |
| Castagneto Carducci to Olivet | 531.17 mi (854.83 km) |
| Castagneto Carducci to Ollioules | 239.56 mi (385.53 km) |
| Castagneto Carducci to Olonne-sur-Mer | 648.36 mi (1,043.43 km) |
| Castagneto Carducci to Oloron-Sainte-Marie | 564.21 mi (908.00 km) |
| Castagneto Carducci to Onet Village | 407.81 mi (656.31 km) |
| Castagneto Carducci to Onnaing | 598.32 mi (962.90 km) |
| Castagneto Carducci to Orange | 297.08 mi (478.10 km) |
| Castagneto Carducci to Orchies | 612.45 mi (985.64 km) |
| Castagneto Carducci to Orleans | 532.36 mi (856.76 km) |
| Castagneto Carducci to Orly | 550.69 mi (886.25 km) |
| Castagneto Carducci to Ormesson-sur-Marne | 547.67 mi (881.39 km) |
| Castagneto Carducci to Orsay | 555.70 mi (894.32 km) |
