| Bielefeld to Smolyan | 1,046.64 mi (1,684.40 km) |
| Bielefeld to Sofia | 942.35 mi (1,516.56 km) |
| Bielefeld to Sopot | 993.89 mi (1,599.51 km) |
| Bielefeld to Sozopol | 1,112.05 mi (1,789.68 km) |
| Bielefeld to Sredets | 1,096.74 mi (1,765.04 km) |
| Bielefeld to Stamboliyski | 1,012.50 mi (1,629.46 km) |
| Bielefeld to Stara Zagora | 1,036.52 mi (1,668.12 km) |
| Bielefeld to Svilengrad | 1,089.26 mi (1,752.99 km) |
| Bielefeld to Svishtov | 968.67 mi (1,558.93 km) |
| Bielefeld to Targovishte | 1,031.42 mi (1,659.92 km) |
| Bielefeld to Teteven | 963.63 mi (1,550.81 km) |
| Bielefeld to Troyan | 981.13 mi (1,578.98 km) |
| Bielefeld to Tryavna | 1,009.91 mi (1,625.30 km) |
| Bielefeld to Tutrakan | 996.35 mi (1,603.46 km) |
| Bielefeld to Varna | 1,083.17 mi (1,743.19 km) |
