| Keszthely to Smolyan | 514.12 mi (827.39 km) |
| Keszthely to Sofia | 409.86 mi (659.60 km) |
| Keszthely to Sopot | 465.17 mi (748.62 km) |
| Keszthely to Sozopol | 595.02 mi (957.60 km) |
| Keszthely to Sredets | 576.65 mi (928.02 km) |
| Keszthely to Stamboliyski | 481.01 mi (774.11 km) |
| Keszthely to Stara Zagora | 510.04 mi (820.83 km) |
| Keszthely to Svilengrad | 561.23 mi (903.21 km) |
| Keszthely to Svishtov | 450.32 mi (724.73 km) |
| Keszthely to Targovishte | 516.32 mi (830.94 km) |
| Keszthely to Teteven | 434.56 mi (699.36 km) |
| Keszthely to Troyan | 453.60 mi (730.00 km) |
| Keszthely to Tryavna | 485.68 mi (781.63 km) |
| Keszthely to Tutrakan | 491.35 mi (790.75 km) |
| Keszthely to Varna | 575.56 mi (926.27 km) |
