| Kettering to Karlovo | 1,358.11 mi (2,185.66 km) |
| Kettering to Karnobat | 1,445.75 mi (2,326.71 km) |
| Kettering to Kavarna | 1,468.04 mi (2,362.58 km) |
| Kettering to Kazanlak | 1,382.87 mi (2,225.52 km) |
| Kettering to Knezha | 1,292.96 mi (2,080.82 km) |
| Kettering to Kostinbrod | 1,287.76 mi (2,072.45 km) |
| Kettering to Kozloduy | 1,267.22 mi (2,039.40 km) |
| Kettering to Kyustendil | 1,290.66 mi (2,077.12 km) |
| Kettering to Levski | 1,340.62 mi (2,157.52 km) |
| Kettering to Lom | 1,245.65 mi (2,004.68 km) |
| Kettering to Lovech | 1,333.61 mi (2,146.23 km) |
| Kettering to Lukovit | 1,308.88 mi (2,106.44 km) |
| Kettering to Lyaskovets | 1,375.17 mi (2,213.12 km) |
| Kettering to Mezdra | 1,292.45 mi (2,079.99 km) |
| Kettering to Momchilgrad | 1,431.06 mi (2,303.06 km) |
