| Guisborough to Karlovo | 1,426.34 mi (2,295.47 km) |
| Guisborough to Karnobat | 1,507.16 mi (2,425.53 km) |
| Guisborough to Kavarna | 1,521.33 mi (2,448.34 km) |
| Guisborough to Kazanlak | 1,449.33 mi (2,332.47 km) |
| Guisborough to Knezha | 1,359.10 mi (2,187.26 km) |
| Guisborough to Kostinbrod | 1,360.40 mi (2,189.34 km) |
| Guisborough to Kozloduy | 1,332.96 mi (2,145.19 km) |
| Guisborough to Kyustendil | 1,367.78 mi (2,201.23 km) |
| Guisborough to Levski | 1,404.06 mi (2,259.62 km) |
| Guisborough to Lom | 1,312.81 mi (2,112.77 km) |
| Guisborough to Lovech | 1,399.61 mi (2,252.46 km) |
| Guisborough to Lukovit | 1,376.34 mi (2,215.01 km) |
| Guisborough to Lyaskovets | 1,438.15 mi (2,314.48 km) |
| Guisborough to Mezdra | 1,361.72 mi (2,191.48 km) |
| Guisborough to Momchilgrad | 1,502.65 mi (2,418.27 km) |
