| Sozopol to Oignies | 1,293.08 mi (2,081.01 km) |
| Sozopol to Oissel | 1,357.74 mi (2,185.07 km) |
| Sozopol to Olivet | 1,305.50 mi (2,101.00 km) |
| Sozopol to Ollioules | 1,106.23 mi (1,780.31 km) |
| Sozopol to Olonne-sur-Mer | 1,471.64 mi (2,368.37 km) |
| Sozopol to Oloron-Sainte-Marie | 1,429.06 mi (2,299.85 km) |
| Sozopol to Onet Village | 1,262.73 mi (2,032.18 km) |
| Sozopol to Onnaing | 1,265.96 mi (2,037.36 km) |
| Sozopol to Orange | 1,153.81 mi (1,856.88 km) |
| Sozopol to Orchies | 1,282.60 mi (2,064.14 km) |
| Sozopol to Orleans | 1,305.45 mi (2,100.92 km) |
| Sozopol to Orly | 1,292.33 mi (2,079.80 km) |
| Sozopol to Ormesson-sur-Marne | 1,286.33 mi (2,070.15 km) |
| Sozopol to Orsay | 1,300.99 mi (2,093.74 km) |
| Sozopol to Orthez | 1,434.67 mi (2,308.87 km) |
