| Twickenham to Popovo | 1,352.97 mi (2,177.40 km) |
| Twickenham to Provadia | 1,409.61 mi (2,268.55 km) |
| Twickenham to Radnevo | 1,382.13 mi (2,224.32 km) |
| Twickenham to Radomir | 1,250.01 mi (2,011.69 km) |
| Twickenham to Rakitovo | 1,319.79 mi (2,124.00 km) |
| Twickenham to Rakovski | 1,342.87 mi (2,161.13 km) |
| Twickenham to Razgrad | 1,357.86 mi (2,185.26 km) |
| Twickenham to Razlog | 1,299.24 mi (2,090.92 km) |
| Twickenham to Ruse | 1,323.37 mi (2,129.75 km) |
| Twickenham to Samokov | 1,283.44 mi (2,065.50 km) |
| Twickenham to Sandanski | 1,305.61 mi (2,101.17 km) |
| Twickenham to Sevlievo | 1,319.06 mi (2,122.82 km) |
| Twickenham to Shumen | 1,384.82 mi (2,228.65 km) |
| Twickenham to Silistra | 1,367.61 mi (2,200.95 km) |
| Twickenham to Sliven | 1,383.21 mi (2,226.06 km) |
