| Fort Smith to Smolyan | 5,871.28 mi (9,448.91 km) |
| Fort Smith to Sofia | 5,767.21 mi (9,281.43 km) |
| Fort Smith to Sopot | 5,821.65 mi (9,369.04 km) |
| Fort Smith to Sozopol | 5,938.92 mi (9,557.76 km) |
| Fort Smith to Sredets | 5,924.50 mi (9,534.56 km) |
| Fort Smith to Stamboliyski | 5,838.62 mi (9,396.35 km) |
| Fort Smith to Stara Zagora | 5,864.80 mi (9,438.49 km) |
| Fort Smith to Svilengrad | 5,917.32 mi (9,523.00 km) |
| Fort Smith to Svishtov | 5,796.51 mi (9,328.59 km) |
| Fort Smith to Targovishte | 5,858.19 mi (9,427.85 km) |
| Fort Smith to Teteven | 5,791.23 mi (9,320.08 km) |
| Fort Smith to Troyan | 5,809.19 mi (9,348.99 km) |
| Fort Smith to Tryavna | 5,838.29 mi (9,395.82 km) |
| Fort Smith to Tutrakan | 5,820.03 mi (9,366.44 km) |
| Fort Smith to Varna | 5,906.63 mi (9,505.81 km) |
