| San Donato Milanese to Octeville | 585.48 mi (942.24 km) |
| San Donato Milanese to Oignies | 453.72 mi (730.19 km) |
| San Donato Milanese to Oissel | 468.46 mi (753.92 km) |
| San Donato Milanese to Olivet | 387.97 mi (624.38 km) |
| San Donato Milanese to Ollioules | 230.99 mi (371.75 km) |
| San Donato Milanese to Olonne-sur-Mer | 535.24 mi (861.38 km) |
| San Donato Milanese to Oloron-Sainte-Marie | 511.38 mi (822.98 km) |
| San Donato Milanese to Onet Village | 334.51 mi (538.34 km) |
| San Donato Milanese to Onnaing | 432.07 mi (695.34 km) |
| San Donato Milanese to Orange | 235.73 mi (379.36 km) |
| San Donato Milanese to Orchies | 446.70 mi (718.90 km) |
| San Donato Milanese to Orleans | 388.67 mi (625.50 km) |
| San Donato Milanese to Orly | 396.55 mi (638.18 km) |
| San Donato Milanese to Ormesson-sur-Marne | 392.60 mi (631.84 km) |
| San Donato Milanese to Orsay | 402.78 mi (648.21 km) |
