| Langenfeld to Smolyan | 1,067.88 mi (1,718.59 km) |
| Langenfeld to Sofia | 963.87 mi (1,551.20 km) |
| Langenfeld to Sopot | 1,019.85 mi (1,641.29 km) |
| Langenfeld to Sozopol | 1,145.41 mi (1,843.36 km) |
| Langenfeld to Sredets | 1,128.51 mi (1,816.17 km) |
| Langenfeld to Stamboliyski | 1,035.51 mi (1,666.49 km) |
| Langenfeld to Stara Zagora | 1,064.27 mi (1,712.78 km) |
| Langenfeld to Svilengrad | 1,115.86 mi (1,795.80 km) |
| Langenfeld to Svishtov | 1,000.85 mi (1,610.72 km) |
| Langenfeld to Targovishte | 1,065.35 mi (1,714.52 km) |
| Langenfeld to Teteven | 989.26 mi (1,592.06 km) |
| Langenfeld to Troyan | 1,008.03 mi (1,622.27 km) |
| Langenfeld to Tryavna | 1,039.11 mi (1,672.28 km) |
| Langenfeld to Tutrakan | 1,033.96 mi (1,664.00 km) |
| Langenfeld to Varna | 1,120.37 mi (1,803.05 km) |
