| Biddulph to Popovo | 1,457.77 mi (2,346.05 km) |
| Biddulph to Provadia | 1,512.71 mi (2,434.47 km) |
| Biddulph to Radnevo | 1,491.22 mi (2,399.88 km) |
| Biddulph to Radomir | 1,364.12 mi (2,195.34 km) |
| Biddulph to Rakitovo | 1,433.50 mi (2,307.00 km) |
| Biddulph to Rakovski | 1,453.87 mi (2,339.78 km) |
| Biddulph to Razgrad | 1,461.41 mi (2,351.91 km) |
| Biddulph to Razlog | 1,414.46 mi (2,276.36 km) |
| Biddulph to Ruse | 1,426.90 mi (2,296.37 km) |
| Biddulph to Samokov | 1,397.05 mi (2,248.34 km) |
| Biddulph to Sandanski | 1,422.14 mi (2,288.71 km) |
| Biddulph to Sevlievo | 1,427.23 mi (2,296.91 km) |
| Biddulph to Shumen | 1,488.51 mi (2,395.52 km) |
| Biddulph to Silistra | 1,467.45 mi (2,361.63 km) |
| Biddulph to Sliven | 1,490.21 mi (2,398.27 km) |
