| Leon Valley to Smolyan | 6,340.33 mi (10,203.78 km) |
| Leon Valley to Sofia | 6,236.41 mi (10,036.53 km) |
| Leon Valley to Sopot | 6,291.62 mi (10,125.39 km) |
| Leon Valley to Sozopol | 6,410.24 mi (10,316.29 km) |
| Leon Valley to Sredets | 6,395.54 mi (10,292.63 km) |
| Leon Valley to Stamboliyski | 6,308.05 mi (10,151.82 km) |
| Leon Valley to Stara Zagora | 6,335.10 mi (10,195.36 km) |
| Leon Valley to Svilengrad | 6,387.41 mi (10,279.55 km) |
| Leon Valley to Svishtov | 6,267.50 mi (10,086.57 km) |
| Leon Valley to Targovishte | 6,329.52 mi (10,186.38 km) |
| Leon Valley to Teteven | 6,261.14 mi (10,076.33 km) |
| Leon Valley to Troyan | 6,279.33 mi (10,105.60 km) |
| Leon Valley to Tryavna | 6,308.83 mi (10,153.08 km) |
| Leon Valley to Tutrakan | 6,291.86 mi (10,125.77 km) |
| Leon Valley to Varna | 6,378.53 mi (10,265.25 km) |
