| Rickmansworth to Karlovo | 1,331.04 mi (2,142.10 km) |
| Rickmansworth to Karnobat | 1,420.94 mi (2,286.78 km) |
| Rickmansworth to Kavarna | 1,446.09 mi (2,327.26 km) |
| Rickmansworth to Kazanlak | 1,356.39 mi (2,182.90 km) |
| Rickmansworth to Knezha | 1,266.81 mi (2,038.73 km) |
| Rickmansworth to Kostinbrod | 1,259.27 mi (2,026.61 km) |
| Rickmansworth to Kozloduy | 1,241.28 mi (1,997.65 km) |
| Rickmansworth to Kyustendil | 1,260.55 mi (2,028.66 km) |
| Rickmansworth to Levski | 1,315.32 mi (2,116.80 km) |
| Rickmansworth to Lom | 1,219.25 mi (1,962.20 km) |
| Rickmansworth to Lovech | 1,307.40 mi (2,104.05 km) |
| Rickmansworth to Lukovit | 1,282.20 mi (2,063.51 km) |
| Rickmansworth to Lyaskovets | 1,349.95 mi (2,172.53 km) |
| Rickmansworth to Mezdra | 1,265.16 mi (2,036.08 km) |
| Rickmansworth to Momchilgrad | 1,402.63 mi (2,257.31 km) |
