| Blackburn to Popovo | 1,482.51 mi (2,385.87 km) |
| Blackburn to Provadia | 1,536.71 mi (2,473.10 km) |
| Blackburn to Radnevo | 1,517.65 mi (2,442.42 km) |
| Blackburn to Radomir | 1,392.77 mi (2,241.44 km) |
| Blackburn to Rakitovo | 1,461.90 mi (2,352.70 km) |
| Blackburn to Rakovski | 1,481.13 mi (2,383.64 km) |
| Blackburn to Razgrad | 1,485.66 mi (2,390.93 km) |
| Blackburn to Razlog | 1,443.52 mi (2,323.12 km) |
| Blackburn to Ruse | 1,451.18 mi (2,335.44 km) |
| Blackburn to Samokov | 1,425.45 mi (2,294.05 km) |
| Blackburn to Sandanski | 1,451.75 mi (2,336.36 km) |
| Blackburn to Sevlievo | 1,453.36 mi (2,338.96 km) |
| Blackburn to Shumen | 1,512.77 mi (2,434.58 km) |
| Blackburn to Silistra | 1,490.23 mi (2,398.29 km) |
| Blackburn to Sliven | 1,515.80 mi (2,439.44 km) |
