| College Park to Popovo | 4,998.80 mi (8,044.79 km) |
| College Park to Provadia | 5,053.58 mi (8,132.95 km) |
| College Park to Radnevo | 5,030.88 mi (8,096.41 km) |
| College Park to Radomir | 4,898.56 mi (7,883.48 km) |
| College Park to Rakitovo | 4,968.45 mi (7,995.94 km) |
| College Park to Rakovski | 4,992.00 mi (8,033.84 km) |
| College Park to Razgrad | 5,002.38 mi (8,050.55 km) |
| College Park to Razlog | 4,947.07 mi (7,961.54 km) |
| College Park to Ruse | 4,967.87 mi (7,995.02 km) |
| College Park to Samokov | 4,932.18 mi (7,937.57 km) |
| College Park to Sandanski | 4,952.31 mi (7,969.97 km) |
| College Park to Sevlievo | 4,967.38 mi (7,994.22 km) |
| College Park to Shumen | 5,029.48 mi (8,094.17 km) |
| College Park to Silistra | 5,007.08 mi (8,058.11 km) |
| College Park to Sliven | 5,030.87 mi (8,096.41 km) |
