| Flint to Smolyan | 1,516.08 mi (2,439.89 km) |
| Flint to Sofia | 1,412.51 mi (2,273.21 km) |
| Flint to Sopot | 1,470.08 mi (2,365.87 km) |
| Flint to Sozopol | 1,596.88 mi (2,569.93 km) |
| Flint to Sredets | 1,579.87 mi (2,542.56 km) |
| Flint to Stamboliyski | 1,484.62 mi (2,389.26 km) |
| Flint to Stara Zagora | 1,514.95 mi (2,438.08 km) |
| Flint to Svilengrad | 1,566.15 mi (2,520.48 km) |
| Flint to Svishtov | 1,452.28 mi (2,337.23 km) |
| Flint to Targovishte | 1,516.83 mi (2,441.11 km) |
| Flint to Teteven | 1,439.45 mi (2,316.57 km) |
| Flint to Troyan | 1,458.56 mi (2,347.33 km) |
| Flint to Tryavna | 1,490.14 mi (2,398.14 km) |
| Flint to Tutrakan | 1,485.15 mi (2,390.12 km) |
| Flint to Varna | 1,571.65 mi (2,529.33 km) |
