| Guadarrama to Karditsa | 1,373.98 mi (2,211.20 km) |
| Guadarrama to Kastoria | 1,325.67 mi (2,133.46 km) |
| Guadarrama to Katerini | 1,392.51 mi (2,241.03 km) |
| Guadarrama to Keratsini | 1,486.44 mi (2,392.20 km) |
| Guadarrama to Kerkyra | 1,266.19 mi (2,037.74 km) |
| Guadarrama to Kiato | 1,440.19 mi (2,317.76 km) |
| Guadarrama to Kifisia | 1,494.72 mi (2,405.53 km) |
| Guadarrama to Kilkis | 1,403.81 mi (2,259.21 km) |
| Guadarrama to Komotini | 1,534.10 mi (2,468.90 km) |
| Guadarrama to Korinthos | 1,450.86 mi (2,334.93 km) |
| Guadarrama to Koropi | 1,501.16 mi (2,415.88 km) |
| Guadarrama to Korydallos | 1,487.87 mi (2,394.50 km) |
| Guadarrama to Kos | 1,698.88 mi (2,734.08 km) |
| Guadarrama to Kozani | 1,354.89 mi (2,180.48 km) |
| Guadarrama to Lagos | 1,514.28 mi (2,437.01 km) |
