| Jefferson to Smolyan | 5,509.80 mi (8,867.16 km) |
| Jefferson to Sofia | 5,407.48 mi (8,702.50 km) |
| Jefferson to Sopot | 5,467.55 mi (8,799.17 km) |
| Jefferson to Sozopol | 5,596.14 mi (9,006.12 km) |
| Jefferson to Sredets | 5,579.05 mi (8,978.61 km) |
| Jefferson to Stamboliyski | 5,480.11 mi (8,819.39 km) |
| Jefferson to Stara Zagora | 5,513.11 mi (8,872.49 km) |
| Jefferson to Svilengrad | 5,563.57 mi (8,953.70 km) |
| Jefferson to Svishtov | 5,451.54 mi (8,773.41 km) |
| Jefferson to Targovishte | 5,516.06 mi (8,877.24 km) |
| Jefferson to Teteven | 5,436.89 mi (8,749.83 km) |
| Jefferson to Troyan | 5,456.53 mi (8,781.44 km) |
| Jefferson to Tryavna | 5,488.87 mi (8,833.48 km) |
| Jefferson to Tutrakan | 5,483.47 mi (8,824.80 km) |
| Jefferson to Varna | 5,570.17 mi (8,964.32 km) |
