| Guadarrama to Karlovo | 1,490.56 mi (2,398.83 km) |
| Guadarrama to Karnobat | 1,600.78 mi (2,576.20 km) |
| Guadarrama to Kavarna | 1,663.67 mi (2,677.42 km) |
| Guadarrama to Kazanlak | 1,520.75 mi (2,447.40 km) |
| Guadarrama to Knezha | 1,450.66 mi (2,334.62 km) |
| Guadarrama to Kostinbrod | 1,409.21 mi (2,267.90 km) |
| Guadarrama to Kozloduy | 1,432.65 mi (2,305.62 km) |
| Guadarrama to Kyustendil | 1,384.61 mi (2,228.31 km) |
| Guadarrama to Levski | 1,503.70 mi (2,419.96 km) |
| Guadarrama to Lom | 1,407.89 mi (2,265.77 km) |
| Guadarrama to Lovech | 1,483.67 mi (2,387.73 km) |
| Guadarrama to Lukovit | 1,455.72 mi (2,342.76 km) |
| Guadarrama to Lyaskovets | 1,534.13 mi (2,468.94 km) |
| Guadarrama to Mezdra | 1,432.40 mi (2,305.23 km) |
| Guadarrama to Momchilgrad | 1,529.84 mi (2,462.05 km) |
