| Cologno Monzese to Octeville | 581.70 mi (936.15 km) |
| Cologno Monzese to Oignies | 447.95 mi (720.91 km) |
| Cologno Monzese to Oissel | 464.15 mi (746.98 km) |
| Cologno Monzese to Olivet | 384.84 mi (619.35 km) |
| Cologno Monzese to Ollioules | 236.62 mi (380.80 km) |
| Cologno Monzese to Olonne-sur-Mer | 534.20 mi (859.71 km) |
| Cologno Monzese to Oloron-Sainte-Marie | 513.84 mi (826.95 km) |
| Cologno Monzese to Onet Village | 336.51 mi (541.56 km) |
| Cologno Monzese to Onnaing | 426.11 mi (685.76 km) |
| Cologno Monzese to Orange | 239.05 mi (384.72 km) |
| Cologno Monzese to Orchies | 440.84 mi (709.47 km) |
| Cologno Monzese to Orleans | 385.49 mi (620.39 km) |
| Cologno Monzese to Orly | 392.30 mi (631.34 km) |
| Cologno Monzese to Ormesson-sur-Marne | 388.25 mi (624.83 km) |
| Cologno Monzese to Orsay | 398.65 mi (641.57 km) |
