| South Plainfield to Smolyan | 4,837.89 mi (7,785.83 km) |
| South Plainfield to Sofia | 4,735.56 mi (7,621.15 km) |
| South Plainfield to Sopot | 4,795.67 mi (7,717.89 km) |
| South Plainfield to Sozopol | 4,924.55 mi (7,925.30 km) |
| South Plainfield to Sredets | 4,907.36 mi (7,897.63 km) |
| South Plainfield to Stamboliyski | 4,808.20 mi (7,738.05 km) |
| South Plainfield to Stara Zagora | 4,841.26 mi (7,791.26 km) |
| South Plainfield to Svilengrad | 4,891.68 mi (7,872.40 km) |
| South Plainfield to Svishtov | 4,779.91 mi (7,692.52 km) |
| South Plainfield to Targovishte | 4,844.53 mi (7,796.51 km) |
| South Plainfield to Teteven | 4,765.01 mi (7,668.54 km) |
| South Plainfield to Troyan | 4,784.68 mi (7,700.19 km) |
| South Plainfield to Tryavna | 4,817.08 mi (7,752.34 km) |
| South Plainfield to Tutrakan | 4,812.25 mi (7,744.57 km) |
| South Plainfield to Varna | 4,898.90 mi (7,884.02 km) |
