| Huntsville to Popovo | 5,588.80 mi (8,994.30 km) |
| Huntsville to Provadia | 5,642.30 mi (9,080.41 km) |
| Huntsville to Radnevo | 5,623.64 mi (9,050.37 km) |
| Huntsville to Radomir | 5,494.43 mi (8,842.43 km) |
| Huntsville to Rakitovo | 5,564.16 mi (8,954.65 km) |
| Huntsville to Rakovski | 5,586.01 mi (8,989.81 km) |
| Huntsville to Razgrad | 5,591.56 mi (8,998.74 km) |
| Huntsville to Razlog | 5,543.71 mi (8,921.73 km) |
| Huntsville to Ruse | 5,557.14 mi (8,943.35 km) |
| Huntsville to Samokov | 5,527.78 mi (8,896.11 km) |
| Huntsville to Sandanski | 5,549.78 mi (8,931.51 km) |
| Huntsville to Sevlievo | 5,559.59 mi (8,947.29 km) |
| Huntsville to Shumen | 5,618.68 mi (9,042.39 km) |
| Huntsville to Silistra | 5,593.80 mi (9,002.35 km) |
| Huntsville to Sliven | 5,622.26 mi (9,048.15 km) |
