| Saint-Cyr-sur-Loire to Smolyan | 1,244.43 mi (2,002.71 km) |
| Saint-Cyr-sur-Loire to Sofia | 1,147.77 mi (1,847.16 km) |
| Saint-Cyr-sur-Loire to Sopot | 1,215.03 mi (1,955.40 km) |
| Saint-Cyr-sur-Loire to Sozopol | 1,358.83 mi (2,186.83 km) |
| Saint-Cyr-sur-Loire to Sredets | 1,337.42 mi (2,152.37 km) |
| Saint-Cyr-sur-Loire to Stamboliyski | 1,219.92 mi (1,963.28 km) |
| Saint-Cyr-sur-Loire to Stara Zagora | 1,262.96 mi (2,032.53 km) |
| Saint-Cyr-sur-Loire to Svilengrad | 1,308.07 mi (2,105.13 km) |
| Saint-Cyr-sur-Loire to Svishtov | 1,217.41 mi (1,959.24 km) |
| Saint-Cyr-sur-Loire to Targovishte | 1,284.27 mi (2,066.84 km) |
| Saint-Cyr-sur-Loire to Teteven | 1,185.19 mi (1,907.37 km) |
| Saint-Cyr-sur-Loire to Troyan | 1,207.02 mi (1,942.51 km) |
| Saint-Cyr-sur-Loire to Tryavna | 1,243.91 mi (2,001.88 km) |
| Saint-Cyr-sur-Loire to Tutrakan | 1,266.20 mi (2,037.75 km) |
| Saint-Cyr-sur-Loire to Varna | 1,347.41 mi (2,168.45 km) |
