| Grantsville to Smolyan | 6,156.68 mi (9,908.21 km) |
| Grantsville to Sofia | 6,054.21 mi (9,743.31 km) |
| Grantsville to Sopot | 6,094.86 mi (9,808.73 km) |
| Grantsville to Sozopol | 6,184.06 mi (9,952.29 km) |
| Grantsville to Sredets | 6,175.61 mi (9,938.69 km) |
| Grantsville to Stamboliyski | 6,119.71 mi (9,848.72 km) |
| Grantsville to Stara Zagora | 6,131.15 mi (9,867.14 km) |
| Grantsville to Svilengrad | 6,185.14 mi (9,954.03 km) |
| Grantsville to Svishtov | 6,053.04 mi (9,741.43 km) |
| Grantsville to Targovishte | 6,106.10 mi (9,826.82 km) |
| Grantsville to Teteven | 6,066.40 mi (9,762.93 km) |
| Grantsville to Troyan | 6,080.18 mi (9,785.10 km) |
| Grantsville to Tryavna | 6,101.47 mi (9,819.37 km) |
| Grantsville to Tutrakan | 6,058.99 mi (9,751.00 km) |
| Grantsville to Varna | 6,141.05 mi (9,883.07 km) |
