| Romford to Karlovo | 1,303.38 mi (2,097.59 km) |
| Romford to Karnobat | 1,393.09 mi (2,241.96 km) |
| Romford to Kavarna | 1,418.09 mi (2,282.20 km) |
| Romford to Kazanlak | 1,328.67 mi (2,138.29 km) |
| Romford to Knezha | 1,239.06 mi (1,994.07 km) |
| Romford to Kostinbrod | 1,231.77 mi (1,982.34 km) |
| Romford to Kozloduy | 1,213.51 mi (1,952.95 km) |
| Romford to Kyustendil | 1,233.27 mi (1,984.76 km) |
| Romford to Levski | 1,287.50 mi (2,072.03 km) |
| Romford to Lom | 1,191.52 mi (1,917.57 km) |
| Romford to Lovech | 1,279.65 mi (2,059.40 km) |
| Romford to Lukovit | 1,254.50 mi (2,018.93 km) |
| Romford to Lyaskovets | 1,322.12 mi (2,127.75 km) |
| Romford to Mezdra | 1,237.52 mi (1,991.60 km) |
| Romford to Momchilgrad | 1,375.13 mi (2,213.05 km) |
