| Blyth to Popovo | 1,477.66 mi (2,378.06 km) |
| Blyth to Provadia | 1,529.71 mi (2,461.83 km) |
| Blyth to Radnevo | 1,517.29 mi (2,441.85 km) |
| Blyth to Radomir | 1,399.13 mi (2,251.69 km) |
| Blyth to Rakitovo | 1,467.31 mi (2,361.41 km) |
| Blyth to Rakovski | 1,483.20 mi (2,386.98 km) |
| Blyth to Razgrad | 1,479.46 mi (2,380.97 km) |
| Blyth to Razlog | 1,450.91 mi (2,335.01 km) |
| Blyth to Ruse | 1,445.20 mi (2,325.83 km) |
| Blyth to Samokov | 1,430.99 mi (2,302.95 km) |
| Blyth to Sandanski | 1,460.72 mi (2,350.80 km) |
| Blyth to Sevlievo | 1,452.40 mi (2,337.42 km) |
| Blyth to Shumen | 1,506.55 mi (2,424.55 km) |
| Blyth to Silistra | 1,480.17 mi (2,382.10 km) |
| Blyth to Sliven | 1,513.13 mi (2,435.15 km) |
