| East Islip to Popovo | 4,770.39 mi (7,677.21 km) |
| East Islip to Provadia | 4,825.47 mi (7,765.84 km) |
| East Islip to Radnevo | 4,801.79 mi (7,727.74 km) |
| East Islip to Radomir | 4,668.80 mi (7,513.70 km) |
| East Islip to Rakitovo | 4,738.70 mi (7,626.20 km) |
| East Islip to Rakovski | 4,762.63 mi (7,664.72 km) |
| East Islip to Razgrad | 4,774.17 mi (7,683.29 km) |
| East Islip to Razlog | 4,717.12 mi (7,591.48 km) |
| East Islip to Ruse | 4,739.66 mi (7,627.74 km) |
| East Islip to Samokov | 4,702.46 mi (7,567.88 km) |
| East Islip to Sandanski | 4,722.18 mi (7,599.62 km) |
| East Islip to Sevlievo | 4,738.44 mi (7,625.78 km) |
| East Islip to Shumen | 4,801.27 mi (7,726.90 km) |
| East Islip to Silistra | 4,779.50 mi (7,691.86 km) |
| East Islip to Sliven | 4,802.12 mi (7,728.26 km) |
