| Mountain Brook to Smolyan | 5,669.65 mi (9,124.42 km) |
| Mountain Brook to Sofia | 5,566.87 mi (8,959.01 km) |
| Mountain Brook to Sopot | 5,625.94 mi (9,054.07 km) |
| Mountain Brook to Sozopol | 5,752.49 mi (9,257.74 km) |
| Mountain Brook to Sredets | 5,735.90 mi (9,231.04 km) |
| Mountain Brook to Stamboliyski | 5,639.36 mi (9,075.67 km) |
| Mountain Brook to Stara Zagora | 5,671.09 mi (9,126.73 km) |
| Mountain Brook to Svilengrad | 5,722.01 mi (9,208.68 km) |
| Mountain Brook to Svishtov | 5,608.13 mi (9,025.41 km) |
| Mountain Brook to Targovishte | 5,672.18 mi (9,128.48 km) |
| Mountain Brook to Teteven | 5,595.28 mi (9,004.73 km) |
| Mountain Brook to Troyan | 5,614.62 mi (9,035.86 km) |
| Mountain Brook to Tryavna | 5,646.37 mi (9,086.96 km) |
| Mountain Brook to Tutrakan | 5,638.44 mi (9,074.19 km) |
| Mountain Brook to Varna | 5,725.24 mi (9,213.88 km) |
