| West Islip to Popovo | 4,775.71 mi (7,685.77 km) |
| West Islip to Provadia | 4,830.77 mi (7,774.38 km) |
| West Islip to Radnevo | 4,807.16 mi (7,736.37 km) |
| West Islip to Radomir | 4,674.21 mi (7,522.41 km) |
| West Islip to Rakitovo | 4,744.11 mi (7,634.91 km) |
| West Islip to Rakovski | 4,768.02 mi (7,673.38 km) |
| West Islip to Razgrad | 4,779.48 mi (7,691.83 km) |
| West Islip to Razlog | 4,722.55 mi (7,600.21 km) |
| West Islip to Ruse | 4,744.97 mi (7,636.28 km) |
| West Islip to Samokov | 4,707.87 mi (7,576.58 km) |
| West Islip to Sandanski | 4,727.62 mi (7,608.37 km) |
| West Islip to Sevlievo | 4,743.79 mi (7,634.40 km) |
| West Islip to Shumen | 4,806.58 mi (7,735.44 km) |
| West Islip to Silistra | 4,784.77 mi (7,700.34 km) |
| West Islip to Sliven | 4,807.46 mi (7,736.86 km) |
