| Hudson to Smolyan | 5,090.13 mi (8,191.77 km) |
| Hudson to Sofia | 4,986.61 mi (8,025.17 km) |
| Hudson to Sopot | 5,043.64 mi (8,116.95 km) |
| Hudson to Sozopol | 5,166.39 mi (8,314.49 km) |
| Hudson to Sredets | 5,150.67 mi (8,289.20 km) |
| Hudson to Stamboliyski | 5,058.69 mi (8,141.18 km) |
| Hudson to Stara Zagora | 5,087.97 mi (8,188.29 km) |
| Hudson to Svilengrad | 5,139.66 mi (8,271.48 km) |
| Hudson to Svishtov | 5,022.64 mi (8,083.16 km) |
| Hudson to Targovishte | 5,085.80 mi (8,184.80 km) |
| Hudson to Teteven | 5,013.05 mi (8,067.72 km) |
| Hudson to Troyan | 5,031.80 mi (8,097.91 km) |
| Hudson to Tryavna | 5,062.44 mi (8,147.20 km) |
| Hudson to Tutrakan | 5,050.25 mi (8,127.59 km) |
| Hudson to Varna | 5,137.08 mi (8,267.34 km) |
