| Martinsburg to Popovo | 5,018.74 mi (8,076.88 km) |
| Martinsburg to Provadia | 5,073.06 mi (8,164.30 km) |
| Martinsburg to Radnevo | 5,051.89 mi (8,130.23 km) |
| Martinsburg to Radomir | 4,920.84 mi (7,919.32 km) |
| Martinsburg to Rakitovo | 4,990.67 mi (8,031.70 km) |
| Martinsburg to Rakovski | 5,013.51 mi (8,068.46 km) |
| Martinsburg to Razgrad | 5,022.01 mi (8,082.15 km) |
| Martinsburg to Razlog | 4,969.68 mi (7,997.94 km) |
| Martinsburg to Ruse | 4,987.53 mi (8,026.66 km) |
| Martinsburg to Samokov | 4,954.34 mi (7,973.24 km) |
| Martinsburg to Sandanski | 4,975.29 mi (8,006.96 km) |
| Martinsburg to Sevlievo | 4,988.16 mi (8,027.67 km) |
| Martinsburg to Shumen | 5,049.13 mi (8,125.79 km) |
| Martinsburg to Silistra | 5,025.83 mi (8,088.29 km) |
| Martinsburg to Sliven | 5,051.35 mi (8,129.36 km) |
