| Letchworth to Imola | 760.15 mi (1,223.34 km) |
| Letchworth to Impruneta | 780.49 mi (1,256.08 km) |
| Letchworth to Induno Olona | 589.61 mi (948.88 km) |
| Letchworth to Inverigo | 607.83 mi (978.21 km) |
| Letchworth to Inveruno | 607.73 mi (978.05 km) |
| Letchworth to Inzago | 626.71 mi (1,008.59 km) |
| Letchworth to Iseo | 638.83 mi (1,028.09 km) |
| Letchworth to Isernia | 987.66 mi (1,589.48 km) |
| Letchworth to Isola Capo Rizzuto | 1,224.23 mi (1,970.21 km) |
| Letchworth to Isola del Liri | 962.24 mi (1,548.58 km) |
| Letchworth to Isola della Scala | 690.27 mi (1,110.88 km) |
| Letchworth to Isola Vicentina | 687.53 mi (1,106.48 km) |
| Letchworth to Ispica | 1,283.00 mi (2,064.79 km) |
| Letchworth to Istrana | 708.11 mi (1,139.59 km) |
| Letchworth to Itri | 982.83 mi (1,581.71 km) |
