| Tartu to Oignies | 1,090.76 mi (1,755.42 km) |
| Tartu to Oissel | 1,205.67 mi (1,940.34 km) |
| Tartu to Olivet | 1,248.03 mi (2,008.51 km) |
| Tartu to Ollioules | 1,381.57 mi (2,223.42 km) |
| Tartu to Olonne-sur-Mer | 1,434.87 mi (2,309.20 km) |
| Tartu to Oloron-Sainte-Marie | 1,569.57 mi (2,525.98 km) |
| Tartu to Onet Village | 1,407.12 mi (2,264.54 km) |
| Tartu to Onnaing | 1,073.81 mi (1,728.12 km) |
| Tartu to Orange | 1,353.90 mi (2,178.89 km) |
| Tartu to Orchies | 1,081.99 mi (1,741.29 km) |
| Tartu to Orleans | 1,245.87 mi (2,005.04 km) |
| Tartu to Orly | 1,189.53 mi (1,914.36 km) |
| Tartu to Ormesson-sur-Marne | 1,182.71 mi (1,903.39 km) |
| Tartu to Orsay | 1,198.52 mi (1,928.83 km) |
| Tartu to Orthez | 1,558.92 mi (2,508.84 km) |
