| Granite City to Smolyan | 5,541.15 mi (8,917.62 km) |
| Granite City to Sofia | 5,437.12 mi (8,750.19 km) |
| Granite City to Sopot | 5,491.78 mi (8,838.17 km) |
| Granite City to Sozopol | 5,609.64 mi (9,027.85 km) |
| Granite City to Sredets | 5,595.07 mi (9,004.40 km) |
| Granite City to Stamboliyski | 5,508.59 mi (8,865.21 km) |
| Granite City to Stara Zagora | 5,535.05 mi (8,907.80 km) |
| Granite City to Svilengrad | 5,587.49 mi (8,992.20 km) |
| Granite City to Svishtov | 5,467.06 mi (8,798.38 km) |
| Granite City to Targovishte | 5,528.92 mi (8,897.94 km) |
| Granite City to Teteven | 5,461.34 mi (8,789.17 km) |
| Granite City to Troyan | 5,479.38 mi (8,818.21 km) |
| Granite City to Tryavna | 5,508.63 mi (8,865.29 km) |
| Granite City to Tutrakan | 5,491.07 mi (8,837.02 km) |
| Granite City to Varna | 5,577.72 mi (8,976.47 km) |
