| Tryavna to Oignies | 1,183.02 mi (1,903.89 km) |
| Tryavna to Oissel | 1,245.18 mi (2,003.92 km) |
| Tryavna to Olivet | 1,191.12 mi (1,916.93 km) |
| Tryavna to Ollioules | 990.95 mi (1,594.78 km) |
| Tryavna to Olonne-sur-Mer | 1,356.06 mi (2,182.36 km) |
| Tryavna to Oloron-Sainte-Marie | 1,313.38 mi (2,113.68 km) |
| Tryavna to Onet Village | 1,146.73 mi (1,845.48 km) |
| Tryavna to Onnaing | 1,155.98 mi (1,860.37 km) |
| Tryavna to Orange | 1,037.88 mi (1,670.31 km) |
| Tryavna to Orchies | 1,172.65 mi (1,887.20 km) |
| Tryavna to Orleans | 1,191.12 mi (1,916.92 km) |
| Tryavna to Orly | 1,179.13 mi (1,897.63 km) |
| Tryavna to Ormesson-sur-Marne | 1,173.22 mi (1,888.12 km) |
| Tryavna to Orsay | 1,187.69 mi (1,911.40 km) |
| Tryavna to Orthez | 1,318.86 mi (2,122.50 km) |
