| Hopatcong to Smolyan | 4,831.72 mi (7,775.90 km) |
| Hopatcong to Sofia | 4,729.24 mi (7,610.97 km) |
| Hopatcong to Sopot | 4,789.04 mi (7,707.21 km) |
| Hopatcong to Sozopol | 4,917.31 mi (7,913.65 km) |
| Hopatcong to Sredets | 4,900.27 mi (7,886.22 km) |
| Hopatcong to Stamboliyski | 4,801.83 mi (7,727.81 km) |
| Hopatcong to Stara Zagora | 4,834.51 mi (7,780.39 km) |
| Hopatcong to Svilengrad | 4,885.07 mi (7,861.76 km) |
| Hopatcong to Svishtov | 4,772.73 mi (7,680.97 km) |
| Hopatcong to Targovishte | 4,837.21 mi (7,784.74 km) |
| Hopatcong to Teteven | 4,758.38 mi (7,657.86 km) |
| Hopatcong to Troyan | 4,777.95 mi (7,689.37 km) |
| Hopatcong to Tryavna | 4,810.18 mi (7,741.24 km) |
| Hopatcong to Tutrakan | 4,804.60 mi (7,732.25 km) |
| Hopatcong to Varna | 4,891.29 mi (7,871.77 km) |
