| Kerpen to Smolyan | 1,068.80 mi (1,720.06 km) |
| Kerpen to Sofia | 964.96 mi (1,552.96 km) |
| Kerpen to Sopot | 1,021.86 mi (1,644.53 km) |
| Kerpen to Sozopol | 1,148.98 mi (1,849.10 km) |
| Kerpen to Sredets | 1,131.73 mi (1,821.35 km) |
| Kerpen to Stamboliyski | 1,036.85 mi (1,668.65 km) |
| Kerpen to Stara Zagora | 1,066.64 mi (1,716.60 km) |
| Kerpen to Svilengrad | 1,117.93 mi (1,799.13 km) |
| Kerpen to Svishtov | 1,004.29 mi (1,616.25 km) |
| Kerpen to Targovishte | 1,069.12 mi (1,720.58 km) |
| Kerpen to Teteven | 991.24 mi (1,595.25 km) |
| Kerpen to Troyan | 1,010.27 mi (1,625.88 km) |
| Kerpen to Tryavna | 1,041.83 mi (1,676.67 km) |
| Kerpen to Tutrakan | 1,038.60 mi (1,671.47 km) |
| Kerpen to Varna | 1,124.83 mi (1,810.24 km) |
