| Rockville Centre to Popovo | 4,791.25 mi (7,710.78 km) |
| Rockville Centre to Provadia | 4,846.24 mi (7,799.27 km) |
| Rockville Centre to Radnevo | 4,822.86 mi (7,761.65 km) |
| Rockville Centre to Radomir | 4,690.10 mi (7,547.99 km) |
| Rockville Centre to Rakitovo | 4,760.00 mi (7,660.47 km) |
| Rockville Centre to Rakovski | 4,783.80 mi (7,698.78 km) |
| Rockville Centre to Razgrad | 4,794.97 mi (7,716.76 km) |
| Rockville Centre to Razlog | 4,738.49 mi (7,625.87 km) |
| Rockville Centre to Ruse | 4,760.46 mi (7,661.22 km) |
| Rockville Centre to Samokov | 4,723.74 mi (7,602.13 km) |
| Rockville Centre to Sandanski | 4,743.62 mi (7,634.12 km) |
| Rockville Centre to Sevlievo | 4,759.46 mi (7,659.61 km) |
| Rockville Centre to Shumen | 4,822.07 mi (7,760.37 km) |
| Rockville Centre to Silistra | 4,800.11 mi (7,725.04 km) |
| Rockville Centre to Sliven | 4,823.08 mi (7,762.00 km) |
