| Kempston to Karlovo | 1,342.71 mi (2,160.89 km) |
| Kempston to Karnobat | 1,431.11 mi (2,303.15 km) |
| Kempston to Kavarna | 1,454.37 mi (2,340.58 km) |
| Kempston to Kazanlak | 1,367.67 mi (2,201.06 km) |
| Kempston to Knezha | 1,277.86 mi (2,056.52 km) |
| Kempston to Kostinbrod | 1,271.90 mi (2,046.92 km) |
| Kempston to Kozloduy | 1,252.18 mi (2,015.20 km) |
| Kempston to Kyustendil | 1,274.28 mi (2,050.76 km) |
| Kempston to Levski | 1,325.80 mi (2,133.67 km) |
| Kempston to Lom | 1,230.46 mi (1,980.24 km) |
| Kempston to Lovech | 1,318.49 mi (2,121.91 km) |
| Kempston to Lukovit | 1,293.61 mi (2,081.86 km) |
| Kempston to Lyaskovets | 1,360.38 mi (2,189.33 km) |
| Kempston to Mezdra | 1,276.97 mi (2,055.09 km) |
| Kempston to Momchilgrad | 1,415.23 mi (2,277.59 km) |
