| Alta to Smolyan | 1,252.48 mi (2,015.68 km) |
| Alta to Sofia | 1,164.36 mi (1,873.86 km) |
| Alta to Sopot | 1,180.66 mi (1,900.08 km) |
| Alta to Sozopol | 1,232.10 mi (1,982.87 km) |
| Alta to Sredets | 1,229.67 mi (1,978.96 km) |
| Alta to Stamboliyski | 1,213.55 mi (1,953.02 km) |
| Alta to Stara Zagora | 1,204.93 mi (1,939.15 km) |
| Alta to Svilengrad | 1,256.16 mi (2,021.59 km) |
| Alta to Svishtov | 1,121.86 mi (1,805.45 km) |
| Alta to Targovishte | 1,161.49 mi (1,869.24 km) |
| Alta to Teteven | 1,157.83 mi (1,863.35 km) |
| Alta to Troyan | 1,164.52 mi (1,874.12 km) |
| Alta to Tryavna | 1,174.03 mi (1,889.42 km) |
| Alta to Tutrakan | 1,108.63 mi (1,784.17 km) |
| Alta to Varna | 1,182.24 mi (1,902.63 km) |
