| Northampton to Karlovo | 1,361.23 mi (2,190.69 km) |
| Northampton to Karnobat | 1,449.50 mi (2,332.75 km) |
| Northampton to Kavarna | 1,472.54 mi (2,369.83 km) |
| Northampton to Kazanlak | 1,386.16 mi (2,230.81 km) |
| Northampton to Knezha | 1,296.33 mi (2,086.24 km) |
| Northampton to Kostinbrod | 1,290.47 mi (2,076.81 km) |
| Northampton to Kozloduy | 1,270.64 mi (2,044.90 km) |
| Northampton to Kyustendil | 1,292.90 mi (2,080.72 km) |
| Northampton to Levski | 1,344.23 mi (2,163.32 km) |
| Northampton to Lom | 1,248.95 mi (2,009.98 km) |
| Northampton to Lovech | 1,336.96 mi (2,151.64 km) |
| Northampton to Lukovit | 1,312.10 mi (2,111.63 km) |
| Northampton to Lyaskovets | 1,378.80 mi (2,218.97 km) |
| Northampton to Mezdra | 1,295.50 mi (2,084.90 km) |
| Northampton to Momchilgrad | 1,433.80 mi (2,307.48 km) |
