| Beltsville to Popovo | 4,996.29 mi (8,040.75 km) |
| Beltsville to Provadia | 5,051.05 mi (8,128.89 km) |
| Beltsville to Radnevo | 5,028.40 mi (8,092.42 km) |
| Beltsville to Radomir | 4,896.12 mi (7,879.55 km) |
| Beltsville to Rakitovo | 4,966.01 mi (7,992.01 km) |
| Beltsville to Rakovski | 4,989.54 mi (8,029.88 km) |
| Beltsville to Razgrad | 4,999.86 mi (8,046.50 km) |
| Beltsville to Razlog | 4,944.64 mi (7,957.63 km) |
| Beltsville to Ruse | 4,965.36 mi (7,990.97 km) |
| Beltsville to Samokov | 4,929.73 mi (7,933.64 km) |
| Beltsville to Sandanski | 4,949.89 mi (7,966.08 km) |
| Beltsville to Sevlievo | 4,964.89 mi (7,990.22 km) |
| Beltsville to Shumen | 5,026.97 mi (8,090.12 km) |
| Beltsville to Silistra | 5,004.53 mi (8,054.02 km) |
| Beltsville to Sliven | 5,028.38 mi (8,092.39 km) |
