| Highland City to Smolyan | 5,731.37 mi (9,223.75 km) |
| Highland City to Sofia | 5,631.48 mi (9,063.00 km) |
| Highland City to Sopot | 5,695.14 mi (9,165.43 km) |
| Highland City to Sozopol | 5,830.68 mi (9,383.57 km) |
| Highland City to Sredets | 5,811.82 mi (9,353.22 km) |
| Highland City to Stamboliyski | 5,704.26 mi (9,180.12 km) |
| Highland City to Stara Zagora | 5,741.99 mi (9,240.84 km) |
| Highland City to Svilengrad | 5,790.38 mi (9,318.71 km) |
| Highland City to Svishtov | 5,686.02 mi (9,150.76 km) |
| Highland City to Targovishte | 5,751.91 mi (9,256.80 km) |
| Highland City to Teteven | 5,664.63 mi (9,116.33 km) |
| Highland City to Troyan | 5,685.31 mi (9,149.62 km) |
| Highland City to Tryavna | 5,719.69 mi (9,204.95 km) |
| Highland City to Tutrakan | 5,723.66 mi (9,211.35 km) |
| Highland City to Varna | 5,809.51 mi (9,349.51 km) |
