| Gadsden to Smolyan | 5,614.76 mi (9,036.08 km) |
| Gadsden to Sofia | 5,511.99 mi (8,870.70 km) |
| Gadsden to Sopot | 5,571.11 mi (8,965.84 km) |
| Gadsden to Sozopol | 5,697.78 mi (9,169.70 km) |
| Gadsden to Sredets | 5,681.16 mi (9,142.94 km) |
| Gadsden to Stamboliyski | 5,584.49 mi (8,987.38 km) |
| Gadsden to Stara Zagora | 5,616.28 mi (9,038.54 km) |
| Gadsden to Svilengrad | 5,667.18 mi (9,120.45 km) |
| Gadsden to Svishtov | 5,553.40 mi (8,937.34 km) |
| Gadsden to Targovishte | 5,617.48 mi (9,040.46 km) |
| Gadsden to Teteven | 5,540.45 mi (8,916.50 km) |
| Gadsden to Troyan | 5,559.82 mi (8,947.66 km) |
| Gadsden to Tryavna | 5,591.60 mi (8,998.80 km) |
| Gadsden to Tutrakan | 5,583.82 mi (8,986.28 km) |
| Gadsden to Varna | 5,670.61 mi (9,125.96 km) |
