| Belley to Smolyan | 990.23 mi (1,593.62 km) |
| Belley to Sofia | 896.62 mi (1,442.96 km) |
| Belley to Sopot | 965.76 mi (1,554.23 km) |
| Belley to Sozopol | 1,112.77 mi (1,790.82 km) |
| Belley to Sredets | 1,090.29 mi (1,754.64 km) |
| Belley to Stamboliyski | 967.83 mi (1,557.57 km) |
| Belley to Stara Zagora | 1,013.94 mi (1,631.78 km) |
| Belley to Svilengrad | 1,056.77 mi (1,700.70 km) |
| Belley to Svishtov | 974.56 mi (1,568.40 km) |
| Belley to Targovishte | 1,041.05 mi (1,675.40 km) |
| Belley to Teteven | 936.59 mi (1,507.30 km) |
| Belley to Troyan | 958.93 mi (1,543.24 km) |
| Belley to Tryavna | 996.91 mi (1,604.37 km) |
| Belley to Tutrakan | 1,028.00 mi (1,654.40 km) |
| Belley to Varna | 1,105.96 mi (1,779.88 km) |
