| Grantham to Karlovo | 1,367.34 mi (2,200.52 km) |
| Grantham to Karnobat | 1,453.21 mi (2,338.72 km) |
| Grantham to Kavarna | 1,473.36 mi (2,371.14 km) |
| Grantham to Kazanlak | 1,391.64 mi (2,239.63 km) |
| Grantham to Knezha | 1,301.56 mi (2,094.66 km) |
| Grantham to Kostinbrod | 1,298.13 mi (2,089.14 km) |
| Grantham to Kozloduy | 1,275.68 mi (2,053.01 km) |
| Grantham to Kyustendil | 1,302.28 mi (2,095.81 km) |
| Grantham to Levski | 1,348.53 mi (2,170.25 km) |
| Grantham to Lom | 1,254.48 mi (2,018.88 km) |
| Grantham to Lovech | 1,342.21 mi (2,160.07 km) |
| Grantham to Lukovit | 1,317.85 mi (2,120.88 km) |
| Grantham to Lyaskovets | 1,382.99 mi (2,225.71 km) |
| Grantham to Mezdra | 1,301.90 mi (2,095.20 km) |
| Grantham to Momchilgrad | 1,441.27 mi (2,319.50 km) |
