| Plainfield to Smolyan | 4,836.18 mi (7,783.07 km) |
| Plainfield to Sofia | 4,733.84 mi (7,618.37 km) |
| Plainfield to Sopot | 4,793.92 mi (7,715.07 km) |
| Plainfield to Sozopol | 4,922.75 mi (7,922.41 km) |
| Plainfield to Sredets | 4,905.57 mi (7,894.76 km) |
| Plainfield to Stamboliyski | 4,806.47 mi (7,735.26 km) |
| Plainfield to Stara Zagora | 4,839.50 mi (7,788.43 km) |
| Plainfield to Svilengrad | 4,889.93 mi (7,869.59 km) |
| Plainfield to Svishtov | 4,778.12 mi (7,689.64 km) |
| Plainfield to Targovishte | 4,842.72 mi (7,793.61 km) |
| Plainfield to Teteven | 4,763.26 mi (7,665.72 km) |
| Plainfield to Troyan | 4,782.92 mi (7,697.37 km) |
| Plainfield to Tryavna | 4,815.31 mi (7,749.49 km) |
| Plainfield to Tutrakan | 4,810.42 mi (7,741.63 km) |
| Plainfield to Varna | 4,897.08 mi (7,881.09 km) |
