| Alencon to Smolyan | 1,284.80 mi (2,067.69 km) |
| Alencon to Sofia | 1,186.16 mi (1,908.94 km) |
| Alencon to Sopot | 1,251.84 mi (2,014.64 km) |
| Alencon to Sozopol | 1,393.02 mi (2,241.84 km) |
| Alencon to Sredets | 1,372.37 mi (2,208.62 km) |
| Alencon to Stamboliyski | 1,258.74 mi (2,025.74 km) |
| Alencon to Stara Zagora | 1,299.43 mi (2,091.22 km) |
| Alencon to Svilengrad | 1,346.01 mi (2,166.20 km) |
| Alencon to Svishtov | 1,250.14 mi (2,011.91 km) |
| Alencon to Targovishte | 1,316.95 mi (2,119.43 km) |
| Alencon to Teteven | 1,221.65 mi (1,966.06 km) |
| Alencon to Troyan | 1,243.06 mi (2,000.52 km) |
| Alencon to Tryavna | 1,279.10 mi (2,058.51 km) |
| Alencon to Tutrakan | 1,296.05 mi (2,085.79 km) |
| Alencon to Varna | 1,378.79 mi (2,218.96 km) |
