| Maryland Heights to Popovo | 5,524.53 mi (8,890.87 km) |
| Maryland Heights to Provadia | 5,575.17 mi (8,972.38 km) |
| Maryland Heights to Radnevo | 5,564.99 mi (8,955.98 km) |
| Maryland Heights to Radomir | 5,443.55 mi (8,760.55 km) |
| Maryland Heights to Rakitovo | 5,512.54 mi (8,871.58 km) |
| Maryland Heights to Rakovski | 5,530.34 mi (8,900.22 km) |
| Maryland Heights to Razgrad | 5,525.62 mi (8,892.63 km) |
| Maryland Heights to Razlog | 5,494.39 mi (8,842.37 km) |
| Maryland Heights to Ruse | 5,491.56 mi (8,837.82 km) |
| Maryland Heights to Samokov | 5,476.10 mi (8,812.94 km) |
| Maryland Heights to Sandanski | 5,502.48 mi (8,855.39 km) |
| Maryland Heights to Sevlievo | 5,500.12 mi (8,851.59 km) |
| Maryland Heights to Shumen | 5,552.61 mi (8,936.06 km) |
| Maryland Heights to Silistra | 5,523.05 mi (8,888.49 km) |
| Maryland Heights to Sliven | 5,560.68 mi (8,949.05 km) |
