| Castelsarrasin to Smolyan | 1,203.61 mi (1,937.03 km) |
| Castelsarrasin to Sofia | 1,116.61 mi (1,797.01 km) |
| Castelsarrasin to Sopot | 1,187.77 mi (1,911.54 km) |
| Castelsarrasin to Sozopol | 1,337.64 mi (2,152.72 km) |
| Castelsarrasin to Sredets | 1,313.99 mi (2,114.66 km) |
| Castelsarrasin to Stamboliyski | 1,185.38 mi (1,907.68 km) |
| Castelsarrasin to Stara Zagora | 1,235.79 mi (1,988.82 km) |
| Castelsarrasin to Svilengrad | 1,274.66 mi (2,051.36 km) |
| Castelsarrasin to Svishtov | 1,204.39 mi (1,938.27 km) |
| Castelsarrasin to Targovishte | 1,269.86 mi (2,043.64 km) |
| Castelsarrasin to Teteven | 1,159.91 mi (1,866.69 km) |
| Castelsarrasin to Troyan | 1,182.67 mi (1,903.33 km) |
| Castelsarrasin to Tryavna | 1,221.69 mi (1,966.12 km) |
| Castelsarrasin to Tutrakan | 1,261.81 mi (2,030.69 km) |
| Castelsarrasin to Varna | 1,336.09 mi (2,150.23 km) |
