| Smithfield to Smolyan | 6,066.93 mi (9,763.78 km) |
| Smithfield to Sofia | 5,964.54 mi (9,599.00 km) |
| Smithfield to Sopot | 6,004.98 mi (9,664.08 km) |
| Smithfield to Sozopol | 6,093.82 mi (9,807.05 km) |
| Smithfield to Sredets | 6,085.43 mi (9,793.56 km) |
| Smithfield to Stamboliyski | 6,029.92 mi (9,704.22 km) |
| Smithfield to Stara Zagora | 6,041.17 mi (9,722.32 km) |
| Smithfield to Svilengrad | 6,095.16 mi (9,809.20 km) |
| Smithfield to Svishtov | 5,962.97 mi (9,596.47 km) |
| Smithfield to Targovishte | 6,015.92 mi (9,681.68 km) |
| Smithfield to Teteven | 5,976.56 mi (9,618.34 km) |
| Smithfield to Troyan | 5,990.28 mi (9,640.42 km) |
| Smithfield to Tryavna | 6,011.46 mi (9,674.51 km) |
| Smithfield to Tutrakan | 5,968.72 mi (9,605.73 km) |
| Smithfield to Varna | 6,050.72 mi (9,737.69 km) |
