| Owings Mills to Popovo | 4,973.95 mi (8,004.79 km) |
| Owings Mills to Provadia | 5,028.60 mi (8,092.75 km) |
| Owings Mills to Radnevo | 5,006.31 mi (8,056.88 km) |
| Owings Mills to Radomir | 4,874.35 mi (7,844.51 km) |
| Owings Mills to Rakitovo | 4,944.22 mi (7,956.95 km) |
| Owings Mills to Rakovski | 4,967.57 mi (7,994.53 km) |
| Owings Mills to Razgrad | 4,977.44 mi (8,010.42 km) |
| Owings Mills to Razlog | 4,922.96 mi (7,922.73 km) |
| Owings Mills to Ruse | 4,942.94 mi (7,954.90 km) |
| Owings Mills to Samokov | 4,907.93 mi (7,898.55 km) |
| Owings Mills to Sandanski | 4,928.30 mi (7,931.34 km) |
| Owings Mills to Sevlievo | 4,942.75 mi (7,954.58 km) |
| Owings Mills to Shumen | 5,004.55 mi (8,054.05 km) |
| Owings Mills to Silistra | 4,981.91 mi (8,017.61 km) |
| Owings Mills to Sliven | 5,006.16 mi (8,056.64 km) |
