| Grangemouth to Smolyan | 1,613.58 mi (2,596.81 km) |
| Grangemouth to Sofia | 1,509.28 mi (2,428.95 km) |
| Grangemouth to Sopot | 1,561.44 mi (2,512.90 km) |
| Grangemouth to Sozopol | 1,678.26 mi (2,700.90 km) |
| Grangemouth to Sredets | 1,663.50 mi (2,677.15 km) |
| Grangemouth to Stamboliyski | 1,579.78 mi (2,542.41 km) |
| Grangemouth to Stara Zagora | 1,604.03 mi (2,581.44 km) |
| Grangemouth to Svilengrad | 1,656.81 mi (2,666.39 km) |
| Grangemouth to Svishtov | 1,535.48 mi (2,471.11 km) |
| Grangemouth to Targovishte | 1,597.55 mi (2,571.01 km) |
| Grangemouth to Teteven | 1,531.17 mi (2,464.17 km) |
| Grangemouth to Troyan | 1,548.69 mi (2,492.38 km) |
| Grangemouth to Tryavna | 1,577.29 mi (2,538.40 km) |
| Grangemouth to Tutrakan | 1,560.79 mi (2,511.84 km) |
| Grangemouth to Varna | 1,647.59 mi (2,651.54 km) |
