| Thonex to Smolyan | 972.64 mi (1,565.31 km) |
| Thonex to Sofia | 877.44 mi (1,412.10 km) |
| Thonex to Sopot | 945.80 mi (1,522.12 km) |
| Thonex to Sozopol | 1,091.66 mi (1,756.85 km) |
| Thonex to Sredets | 1,069.56 mi (1,721.29 km) |
| Thonex to Stamboliyski | 949.15 mi (1,527.51 km) |
| Thonex to Stara Zagora | 993.92 mi (1,599.55 km) |
| Thonex to Svilengrad | 1,037.77 mi (1,670.13 km) |
| Thonex to Svishtov | 952.20 mi (1,532.42 km) |
| Thonex to Targovishte | 1,018.88 mi (1,639.73 km) |
| Thonex to Teteven | 916.33 mi (1,474.69 km) |
| Thonex to Troyan | 938.48 mi (1,510.34 km) |
| Thonex to Tryavna | 976.06 mi (1,570.82 km) |
| Thonex to Tutrakan | 1,004.25 mi (1,616.18 km) |
| Thonex to Varna | 1,083.27 mi (1,743.36 km) |
