| Kierspe to Smolyan | 1,045.76 mi (1,682.98 km) |
| Kierspe to Sofia | 941.64 mi (1,515.42 km) |
| Kierspe to Sopot | 996.94 mi (1,604.41 km) |
| Kierspe to Sozopol | 1,121.46 mi (1,804.82 km) |
| Kierspe to Sredets | 1,104.78 mi (1,777.98 km) |
| Kierspe to Stamboliyski | 1,013.08 mi (1,630.39 km) |
| Kierspe to Stara Zagora | 1,041.10 mi (1,675.50 km) |
| Kierspe to Svilengrad | 1,092.89 mi (1,758.84 km) |
| Kierspe to Svishtov | 977.01 mi (1,572.34 km) |
| Kierspe to Targovishte | 1,041.29 mi (1,675.80 km) |
| Kierspe to Teteven | 966.38 mi (1,555.25 km) |
| Kierspe to Troyan | 984.97 mi (1,585.15 km) |
| Kierspe to Tryavna | 1,015.71 mi (1,634.63 km) |
| Kierspe to Tutrakan | 1,009.41 mi (1,624.49 km) |
| Kierspe to Varna | 1,095.90 mi (1,763.68 km) |
