| Guadarrama to Grottaferrata | 872.93 mi (1,404.85 km) |
| Guadarrama to Grottaglie | 1,126.22 mi (1,812.48 km) |
| Guadarrama to Grottammare | 936.23 mi (1,506.72 km) |
| Guadarrama to Grugliasco | 663.37 mi (1,067.59 km) |
| Guadarrama to Grumo Appula | 1,084.28 mi (1,744.98 km) |
| Guadarrama to Grumo Nevano | 958.42 mi (1,542.42 km) |
| Guadarrama to Gualdo Tadino | 883.21 mi (1,421.39 km) |
| Guadarrama to Guardiagrele | 952.20 mi (1,532.42 km) |
| Guadarrama to Guastalla | 802.06 mi (1,290.80 km) |
| Guadarrama to Gubbio | 873.25 mi (1,405.35 km) |
| Guadarrama to Guspini | 676.34 mi (1,088.46 km) |
| Guadarrama to Gussago | 793.03 mi (1,276.26 km) |
| Guadarrama to Iesi | 908.13 mi (1,461.50 km) |
| Guadarrama to Iesolo | 906.34 mi (1,458.62 km) |
| Guadarrama to Iglesias | 674.06 mi (1,084.80 km) |
