| Castelnuovo Rangone to Octeville | 686.51 mi (1,104.84 km) |
| Castelnuovo Rangone to Oignies | 551.26 mi (887.17 km) |
| Castelnuovo Rangone to Oissel | 569.47 mi (916.47 km) |
| Castelnuovo Rangone to Olivet | 488.42 mi (786.03 km) |
| Castelnuovo Rangone to Ollioules | 271.50 mi (436.93 km) |
| Castelnuovo Rangone to Olonne-sur-Mer | 629.24 mi (1,012.66 km) |
| Castelnuovo Rangone to Oloron-Sainte-Marie | 581.86 mi (936.42 km) |
| Castelnuovo Rangone to Onet Village | 411.30 mi (661.93 km) |
| Castelnuovo Rangone to Onnaing | 528.69 mi (850.85 km) |
| Castelnuovo Rangone to Orange | 303.84 mi (488.99 km) |
| Castelnuovo Rangone to Orchies | 543.79 mi (875.14 km) |
| Castelnuovo Rangone to Orleans | 489.18 mi (787.26 km) |
| Castelnuovo Rangone to Orly | 497.58 mi (800.78 km) |
| Castelnuovo Rangone to Ormesson-sur-Marne | 493.58 mi (794.34 km) |
| Castelnuovo Rangone to Orsay | 503.85 mi (810.87 km) |
