| Siirt to Octeville | 2,282.44 mi (3,673.23 km) |
| Siirt to Oignies | 2,084.82 mi (3,355.20 km) |
| Siirt to Oissel | 2,158.48 mi (3,473.74 km) |
| Siirt to Olivet | 2,112.93 mi (3,400.44 km) |
| Siirt to Ollioules | 1,914.27 mi (3,080.72 km) |
| Siirt to Olonne-sur-Mer | 2,282.91 mi (3,673.99 km) |
| Siirt to Oloron-Sainte-Marie | 2,238.59 mi (3,602.66 km) |
| Siirt to Onet Village | 2,074.37 mi (3,338.37 km) |
| Siirt to Onnaing | 2,057.65 mi (3,311.47 km) |
| Siirt to Orange | 1,964.96 mi (3,162.30 km) |
| Siirt to Orchies | 2,074.02 mi (3,337.81 km) |
| Siirt to Orleans | 2,112.73 mi (3,400.12 km) |
| Siirt to Orly | 2,095.64 mi (3,372.61 km) |
| Siirt to Ormesson-sur-Marne | 2,089.35 mi (3,362.49 km) |
| Siirt to Orsay | 2,104.63 mi (3,387.08 km) |
