| Horn Lake to Smolyan | 5,728.04 mi (9,218.39 km) |
| Horn Lake to Sofia | 5,624.47 mi (9,051.71 km) |
| Horn Lake to Sopot | 5,681.26 mi (9,143.10 km) |
| Horn Lake to Sozopol | 5,803.28 mi (9,339.47 km) |
| Horn Lake to Sredets | 5,787.76 mi (9,314.50 km) |
| Horn Lake to Stamboliyski | 5,696.51 mi (9,167.64 km) |
| Horn Lake to Stara Zagora | 5,725.46 mi (9,214.23 km) |
| Horn Lake to Svilengrad | 5,777.25 mi (9,297.59 km) |
| Horn Lake to Svishtov | 5,659.71 mi (9,108.42 km) |
| Horn Lake to Targovishte | 5,722.64 mi (9,209.71 km) |
| Horn Lake to Teteven | 5,650.68 mi (9,093.89 km) |
| Horn Lake to Troyan | 5,669.35 mi (9,123.94 km) |
| Horn Lake to Tryavna | 5,699.80 mi (9,172.93 km) |
| Horn Lake to Tutrakan | 5,686.63 mi (9,151.74 km) |
| Horn Lake to Varna | 5,773.44 mi (9,291.46 km) |
