| Fort Madison to Popovo | 5,456.26 mi (8,781.00 km) |
| Fort Madison to Provadia | 5,505.80 mi (8,860.73 km) |
| Fort Madison to Radnevo | 5,498.65 mi (8,849.22 km) |
| Fort Madison to Radomir | 5,380.24 mi (8,658.65 km) |
| Fort Madison to Rakitovo | 5,448.82 mi (8,769.03 km) |
| Fort Madison to Rakovski | 5,465.13 mi (8,795.27 km) |
| Fort Madison to Razgrad | 5,456.76 mi (8,781.81 km) |
| Fort Madison to Razlog | 5,431.54 mi (8,741.22 km) |
| Fort Madison to Ruse | 5,422.90 mi (8,727.31 km) |
| Fort Madison to Samokov | 5,412.43 mi (8,710.47 km) |
| Fort Madison to Sandanski | 5,440.34 mi (8,755.38 km) |
| Fort Madison to Sevlievo | 5,433.61 mi (8,744.55 km) |
| Fort Madison to Shumen | 5,483.65 mi (8,825.09 km) |
| Fort Madison to Silistra | 5,452.49 mi (8,774.94 km) |
| Fort Madison to Sliven | 5,493.30 mi (8,840.61 km) |
