| East Islip to Smolyan | 4,780.67 mi (7,693.75 km) |
| East Islip to Sofia | 4,678.52 mi (7,529.35 km) |
| East Islip to Sopot | 4,738.97 mi (7,626.64 km) |
| East Islip to Sozopol | 4,868.54 mi (7,835.16 km) |
| East Islip to Sredets | 4,851.18 mi (7,807.22 km) |
| East Islip to Stamboliyski | 4,751.19 mi (7,646.30 km) |
| East Islip to Stara Zagora | 4,784.70 mi (7,700.23 km) |
| East Islip to Svilengrad | 4,834.94 mi (7,781.09 km) |
| East Islip to Svishtov | 4,723.85 mi (7,602.30 km) |
| East Islip to Targovishte | 4,788.62 mi (7,706.53 km) |
| East Islip to Teteven | 4,708.31 mi (7,577.29 km) |
| East Islip to Troyan | 4,728.08 mi (7,609.11 km) |
| East Islip to Tryavna | 4,760.68 mi (7,661.58 km) |
| East Islip to Tutrakan | 4,756.75 mi (7,655.25 km) |
| East Islip to Varna | 4,843.35 mi (7,794.62 km) |
