| New Carrollton to Popovo | 4,997.96 mi (8,043.44 km) |
| New Carrollton to Provadia | 5,052.77 mi (8,131.64 km) |
| New Carrollton to Radnevo | 5,029.97 mi (8,094.96 km) |
| New Carrollton to Radomir | 4,897.59 mi (7,881.91 km) |
| New Carrollton to Rakitovo | 4,967.48 mi (7,994.38 km) |
| New Carrollton to Rakovski | 4,991.07 mi (8,032.35 km) |
| New Carrollton to Razgrad | 5,001.56 mi (8,049.23 km) |
| New Carrollton to Razlog | 4,946.08 mi (7,959.94 km) |
| New Carrollton to Ruse | 4,967.05 mi (7,993.70 km) |
| New Carrollton to Samokov | 4,931.21 mi (7,936.01 km) |
| New Carrollton to Sandanski | 4,951.29 mi (7,968.34 km) |
| New Carrollton to Sevlievo | 4,966.49 mi (7,992.79 km) |
| New Carrollton to Shumen | 5,028.66 mi (8,092.85 km) |
| New Carrollton to Silistra | 5,006.31 mi (8,056.88 km) |
| New Carrollton to Sliven | 5,030.00 mi (8,095.01 km) |
