| Leek to Smolyan | 1,469.66 mi (2,365.19 km) |
| Leek to Sofia | 1,366.02 mi (2,198.40 km) |
| Leek to Sopot | 1,423.38 mi (2,290.72 km) |
| Leek to Sozopol | 1,549.92 mi (2,494.36 km) |
| Leek to Sredets | 1,532.96 mi (2,467.07 km) |
| Leek to Stamboliyski | 1,438.08 mi (2,314.37 km) |
| Leek to Stara Zagora | 1,468.19 mi (2,362.82 km) |
| Leek to Svilengrad | 1,519.45 mi (2,445.32 km) |
| Leek to Svishtov | 1,405.35 mi (2,261.69 km) |
| Leek to Targovishte | 1,469.86 mi (2,365.51 km) |
| Leek to Teteven | 1,392.76 mi (2,241.42 km) |
| Leek to Troyan | 1,411.82 mi (2,272.10 km) |
| Leek to Tryavna | 1,443.31 mi (2,322.78 km) |
| Leek to Tutrakan | 1,438.10 mi (2,314.41 km) |
| Leek to Varna | 1,524.61 mi (2,453.63 km) |
