| Sasso Marconi to Octeville | 705.25 mi (1,134.99 km) |
| Sasso Marconi to Oignies | 569.19 mi (916.02 km) |
| Sasso Marconi to Oissel | 588.12 mi (946.49 km) |
| Sasso Marconi to Olivet | 507.14 mi (816.17 km) |
| Sasso Marconi to Ollioules | 283.24 mi (455.83 km) |
| Sasso Marconi to Olonne-sur-Mer | 647.24 mi (1,041.63 km) |
| Sasso Marconi to Oloron-Sainte-Marie | 596.61 mi (960.15 km) |
| Sasso Marconi to Onet Village | 427.26 mi (687.61 km) |
| Sasso Marconi to Onnaing | 546.46 mi (879.45 km) |
| Sasso Marconi to Orange | 319.07 mi (513.49 km) |
| Sasso Marconi to Orchies | 561.63 mi (903.86 km) |
| Sasso Marconi to Orleans | 507.91 mi (817.40 km) |
| Sasso Marconi to Orly | 516.25 mi (830.82 km) |
| Sasso Marconi to Ormesson-sur-Marne | 512.23 mi (824.35 km) |
| Sasso Marconi to Orsay | 522.54 mi (840.95 km) |
