| Tonbridge to Karlovo | 1,291.32 mi (2,078.18 km) |
| Tonbridge to Karnobat | 1,382.19 mi (2,224.41 km) |
| Tonbridge to Kavarna | 1,408.68 mi (2,267.06 km) |
| Tonbridge to Kazanlak | 1,316.91 mi (2,119.37 km) |
| Tonbridge to Knezha | 1,227.52 mi (1,975.50 km) |
| Tonbridge to Kostinbrod | 1,218.99 mi (1,961.77 km) |
| Tonbridge to Kozloduy | 1,202.09 mi (1,934.58 km) |
| Tonbridge to Kyustendil | 1,219.62 mi (1,962.79 km) |
| Tonbridge to Levski | 1,276.39 mi (2,054.14 km) |
| Tonbridge to Lom | 1,179.87 mi (1,898.82 km) |
| Tonbridge to Lovech | 1,268.06 mi (2,040.75 km) |
| Tonbridge to Lukovit | 1,242.68 mi (1,999.89 km) |
| Tonbridge to Lyaskovets | 1,311.04 mi (2,109.91 km) |
| Tonbridge to Mezdra | 1,225.38 mi (1,972.05 km) |
| Tonbridge to Momchilgrad | 1,362.32 mi (2,192.44 km) |
