| Guadarrama to Imola | 842.52 mi (1,355.90 km) |
| Guadarrama to Impruneta | 811.14 mi (1,305.40 km) |
| Guadarrama to Induno Olona | 740.82 mi (1,192.24 km) |
| Guadarrama to Inverigo | 754.53 mi (1,214.29 km) |
| Guadarrama to Inveruno | 732.40 mi (1,178.69 km) |
| Guadarrama to Inzago | 761.26 mi (1,225.13 km) |
| Guadarrama to Iseo | 790.10 mi (1,271.54 km) |
| Guadarrama to Isernia | 954.11 mi (1,535.50 km) |
| Guadarrama to Isola Capo Rizzuto | 1,127.74 mi (1,814.93 km) |
| Guadarrama to Isola del Liri | 919.52 mi (1,479.83 km) |
| Guadarrama to Isola della Scala | 825.16 mi (1,327.97 km) |
| Guadarrama to Isola Vicentina | 853.10 mi (1,372.94 km) |
| Guadarrama to Ispica | 1,055.88 mi (1,699.27 km) |
| Guadarrama to Istrana | 884.06 mi (1,422.75 km) |
| Guadarrama to Itri | 918.61 mi (1,478.36 km) |
