| Kaiserslautern to Smolyan | 979.88 mi (1,576.97 km) |
| Kaiserslautern to Sofia | 876.95 mi (1,411.31 km) |
| Kaiserslautern to Sopot | 936.87 mi (1,507.75 km) |
| Kaiserslautern to Sozopol | 1,069.38 mi (1,721.01 km) |
| Kaiserslautern to Sredets | 1,050.85 mi (1,691.18 km) |
| Kaiserslautern to Stamboliyski | 949.46 mi (1,528.01 km) |
| Kaiserslautern to Stara Zagora | 982.79 mi (1,581.65 km) |
| Kaiserslautern to Svilengrad | 1,032.83 mi (1,662.17 km) |
| Kaiserslautern to Svishtov | 924.68 mi (1,488.13 km) |
| Kaiserslautern to Targovishte | 990.57 mi (1,594.17 km) |
| Kaiserslautern to Teteven | 906.22 mi (1,458.41 km) |
| Kaiserslautern to Troyan | 926.13 mi (1,490.46 km) |
| Kaiserslautern to Tryavna | 959.35 mi (1,543.93 km) |
| Kaiserslautern to Tutrakan | 963.73 mi (1,550.98 km) |
| Kaiserslautern to Varna | 1,048.91 mi (1,688.06 km) |
