| San Marino to Octeville | 5,468.31 mi (8,800.39 km) |
| San Marino to Oignies | 5,580.51 mi (8,980.96 km) |
| San Marino to Oissel | 5,572.73 mi (8,968.45 km) |
| San Marino to Olivet | 5,669.66 mi (9,124.43 km) |
| San Marino to Ollioules | 6,035.71 mi (9,713.54 km) |
| San Marino to Olonne-sur-Mer | 5,604.41 mi (9,019.42 km) |
| San Marino to Oloron-Sainte-Marie | 5,801.06 mi (9,335.91 km) |
| San Marino to Onet Village | 5,861.48 mi (9,433.15 km) |
| San Marino to Onnaing | 5,603.47 mi (9,017.92 km) |
| San Marino to Orange | 5,950.00 mi (9,575.60 km) |
| San Marino to Orchies | 5,588.14 mi (8,993.25 km) |
| San Marino to Orleans | 5,668.10 mi (9,121.92 km) |
| San Marino to Orly | 5,643.95 mi (9,083.05 km) |
| San Marino to Ormesson-sur-Marne | 5,646.71 mi (9,087.50 km) |
| San Marino to Orsay | 5,639.38 mi (9,075.71 km) |
