| Casciana Terme to Octeville | 717.39 mi (1,154.53 km) |
| Casciana Terme to Oignies | 598.60 mi (963.35 km) |
| Casciana Terme to Oissel | 605.13 mi (973.86 km) |
| Casciana Terme to Olivet | 516.00 mi (830.42 km) |
| Casciana Terme to Ollioules | 241.30 mi (388.34 km) |
| Casciana Terme to Olonne-sur-Mer | 638.96 mi (1,028.31 km) |
| Casciana Terme to Oloron-Sainte-Marie | 563.96 mi (907.61 km) |
| Casciana Terme to Onet Village | 403.24 mi (648.96 km) |
| Casciana Terme to Onnaing | 577.59 mi (929.55 km) |
| Casciana Terme to Orange | 292.54 mi (470.80 km) |
| Casciana Terme to Orchies | 591.93 mi (952.62 km) |
| Casciana Terme to Orleans | 517.10 mi (832.19 km) |
| Casciana Terme to Orly | 533.30 mi (858.26 km) |
| Casciana Terme to Ormesson-sur-Marne | 530.06 mi (853.05 km) |
| Casciana Terme to Orsay | 538.59 mi (866.78 km) |
