| Rickmansworth to Popovo | 1,361.54 mi (2,191.18 km) |
| Rickmansworth to Provadia | 1,417.97 mi (2,282.01 km) |
| Rickmansworth to Radnevo | 1,391.26 mi (2,239.01 km) |
| Rickmansworth to Radomir | 1,259.77 mi (2,027.40 km) |
| Rickmansworth to Rakitovo | 1,329.52 mi (2,139.65 km) |
| Rickmansworth to Rakovski | 1,352.24 mi (2,176.21 km) |
| Rickmansworth to Razgrad | 1,366.26 mi (2,198.79 km) |
| Rickmansworth to Razlog | 1,309.16 mi (2,106.89 km) |
| Rickmansworth to Ruse | 1,331.76 mi (2,143.26 km) |
| Rickmansworth to Samokov | 1,293.15 mi (2,081.12 km) |
| Rickmansworth to Sandanski | 1,315.71 mi (2,117.43 km) |
| Rickmansworth to Sevlievo | 1,328.05 mi (2,137.29 km) |
| Rickmansworth to Shumen | 1,393.25 mi (2,242.22 km) |
| Rickmansworth to Silistra | 1,375.55 mi (2,213.73 km) |
| Rickmansworth to Sliven | 1,392.06 mi (2,240.31 km) |
