| Birstall to Popovo | 1,450.18 mi (2,333.83 km) |
| Birstall to Provadia | 1,504.21 mi (2,420.79 km) |
| Birstall to Radnevo | 1,485.76 mi (2,391.10 km) |
| Birstall to Radomir | 1,361.62 mi (2,191.31 km) |
| Birstall to Rakitovo | 1,430.65 mi (2,302.42 km) |
| Birstall to Rakovski | 1,449.49 mi (2,332.73 km) |
| Birstall to Razgrad | 1,453.21 mi (2,338.71 km) |
| Birstall to Razlog | 1,412.52 mi (2,273.22 km) |
| Birstall to Ruse | 1,418.74 mi (2,283.24 km) |
| Birstall to Samokov | 1,394.21 mi (2,243.77 km) |
| Birstall to Sandanski | 1,420.95 mi (2,286.80 km) |
| Birstall to Sevlievo | 1,421.40 mi (2,287.52 km) |
| Birstall to Shumen | 1,480.33 mi (2,382.36 km) |
| Birstall to Silistra | 1,457.47 mi (2,345.57 km) |
| Birstall to Sliven | 1,483.68 mi (2,387.75 km) |
