| Kirchhundem to Smolyan | 1,025.70 mi (1,650.70 km) |
| Kirchhundem to Sofia | 921.52 mi (1,483.05 km) |
| Kirchhundem to Sopot | 976.34 mi (1,571.27 km) |
| Kirchhundem to Sozopol | 1,100.18 mi (1,770.58 km) |
| Kirchhundem to Sredets | 1,083.64 mi (1,743.95 km) |
| Kirchhundem to Stamboliyski | 992.81 mi (1,597.77 km) |
| Kirchhundem to Stara Zagora | 1,020.34 mi (1,642.07 km) |
| Kirchhundem to Svilengrad | 1,072.26 mi (1,725.63 km) |
| Kirchhundem to Svishtov | 955.81 mi (1,538.22 km) |
| Kirchhundem to Targovishte | 1,019.95 mi (1,641.45 km) |
| Kirchhundem to Teteven | 945.82 mi (1,522.15 km) |
| Kirchhundem to Troyan | 964.27 mi (1,551.85 km) |
| Kirchhundem to Tryavna | 994.80 mi (1,600.97 km) |
| Kirchhundem to Tutrakan | 987.77 mi (1,589.66 km) |
| Kirchhundem to Varna | 1,074.30 mi (1,728.92 km) |
