| Sidcup to Karlovo | 1,303.29 mi (2,097.44 km) |
| Sidcup to Karnobat | 1,393.53 mi (2,242.67 km) |
| Sidcup to Kavarna | 1,419.20 mi (2,283.98 km) |
| Sidcup to Kazanlak | 1,328.72 mi (2,138.37 km) |
| Sidcup to Knezha | 1,239.20 mi (1,994.30 km) |
| Sidcup to Kostinbrod | 1,231.34 mi (1,981.65 km) |
| Sidcup to Kozloduy | 1,213.71 mi (1,953.28 km) |
| Sidcup to Kyustendil | 1,232.43 mi (1,983.40 km) |
| Sidcup to Levski | 1,287.84 mi (2,072.58 km) |
| Sidcup to Lom | 1,191.61 mi (1,917.72 km) |
| Sidcup to Lovech | 1,279.78 mi (2,059.60 km) |
| Sidcup to Lukovit | 1,254.52 mi (2,018.95 km) |
| Sidcup to Lyaskovets | 1,322.48 mi (2,128.32 km) |
| Sidcup to Mezdra | 1,237.39 mi (1,991.38 km) |
| Sidcup to Momchilgrad | 1,374.69 mi (2,212.35 km) |
