| Guadarrama to Glyka Nera | 1,498.10 mi (2,410.96 km) |
| Guadarrama to Grevena | 1,338.91 mi (2,154.77 km) |
| Guadarrama to Ialysos | 1,756.70 mi (2,827.14 km) |
| Guadarrama to Ilion | 1,489.55 mi (2,397.20 km) |
| Guadarrama to Ilioupoli | 1,494.06 mi (2,404.46 km) |
| Guadarrama to Ioannina | 1,314.27 mi (2,115.11 km) |
| Guadarrama to Irakleio | 1,625.00 mi (2,615.19 km) |
| Guadarrama to Irakleio | 1,492.73 mi (2,402.31 km) |
| Guadarrama to Kaisariani | 1,493.83 mi (2,404.09 km) |
| Guadarrama to Kalamaria | 1,412.25 mi (2,272.80 km) |
| Guadarrama to Kalamata | 1,426.39 mi (2,295.56 km) |
| Guadarrama to Kallithea | 1,491.12 mi (2,399.73 km) |
| Guadarrama to Kalymnos | 1,682.80 mi (2,708.21 km) |
| Guadarrama to Kalyvia Thorikou | 1,504.72 mi (2,421.60 km) |
| Guadarrama to Kamatero | 1,489.68 mi (2,397.41 km) |
