| Orthez to Smolyan | 1,298.31 mi (2,089.43 km) |
| Orthez to Sofia | 1,212.96 mi (1,952.06 km) |
| Orthez to Sopot | 1,284.41 mi (2,067.06 km) |
| Orthez to Sozopol | 1,434.67 mi (2,308.87 km) |
| Orthez to Sredets | 1,410.79 mi (2,270.45 km) |
| Orthez to Stamboliyski | 1,281.05 mi (2,061.65 km) |
| Orthez to Stara Zagora | 1,332.31 mi (2,144.15 km) |
| Orthez to Svilengrad | 1,370.23 mi (2,205.18 km) |
| Orthez to Svishtov | 1,302.60 mi (2,096.33 km) |
| Orthez to Targovishte | 1,367.79 mi (2,201.25 km) |
| Orthez to Teteven | 1,256.87 mi (2,022.73 km) |
| Orthez to Troyan | 1,279.68 mi (2,059.45 km) |
| Orthez to Tryavna | 1,318.86 mi (2,122.50 km) |
| Orthez to Tutrakan | 1,360.73 mi (2,189.89 km) |
| Orthez to Varna | 1,434.22 mi (2,308.16 km) |
