| Bethune to Smolyan | 1,218.20 mi (1,960.50 km) |
| Bethune to Sofia | 1,115.68 mi (1,795.52 km) |
| Bethune to Sopot | 1,176.31 mi (1,893.08 km) |
| Bethune to Sozopol | 1,309.15 mi (2,106.87 km) |
| Bethune to Sredets | 1,290.63 mi (2,077.07 km) |
| Bethune to Stamboliyski | 1,188.32 mi (1,912.42 km) |
| Bethune to Stara Zagora | 1,222.38 mi (1,967.23 km) |
| Bethune to Svilengrad | 1,272.19 mi (2,047.40 km) |
| Bethune to Svishtov | 1,164.43 mi (1,873.97 km) |
| Bethune to Targovishte | 1,230.27 mi (1,979.92 km) |
| Bethune to Teteven | 1,145.66 mi (1,843.76 km) |
| Bethune to Troyan | 1,165.70 mi (1,876.01 km) |
| Bethune to Tryavna | 1,199.08 mi (1,929.73 km) |
| Bethune to Tutrakan | 1,202.89 mi (1,935.87 km) |
| Bethune to Varna | 1,288.30 mi (2,073.32 km) |
