| Bouc-Bel-Air to Smolyan | 988.34 mi (1,590.58 km) |
| Bouc-Bel-Air to Sofia | 903.92 mi (1,454.72 km) |
| Bouc-Bel-Air to Sopot | 975.61 mi (1,570.10 km) |
| Bouc-Bel-Air to Sozopol | 1,126.22 mi (1,812.47 km) |
| Bouc-Bel-Air to Sredets | 1,102.10 mi (1,773.65 km) |
| Bouc-Bel-Air to Stamboliyski | 971.48 mi (1,563.44 km) |
| Bouc-Bel-Air to Stara Zagora | 1,023.37 mi (1,646.96 km) |
| Bouc-Bel-Air to Svilengrad | 1,060.58 mi (1,706.85 km) |
| Bouc-Bel-Air to Svishtov | 996.21 mi (1,603.25 km) |
| Bouc-Bel-Air to Targovishte | 1,060.77 mi (1,707.14 km) |
| Bouc-Bel-Air to Teteven | 948.45 mi (1,526.39 km) |
| Bouc-Bel-Air to Troyan | 971.31 mi (1,563.18 km) |
| Bouc-Bel-Air to Tryavna | 1,010.66 mi (1,626.50 km) |
| Bouc-Bel-Air to Tutrakan | 1,056.06 mi (1,699.56 km) |
| Bouc-Bel-Air to Varna | 1,127.52 mi (1,814.56 km) |
