| Welwyn Garden City to Imola | 751.48 mi (1,209.38 km) |
| Welwyn Garden City to Impruneta | 771.32 mi (1,241.32 km) |
| Welwyn Garden City to Induno Olona | 580.51 mi (934.23 km) |
| Welwyn Garden City to Inverigo | 598.84 mi (963.74 km) |
| Welwyn Garden City to Inveruno | 598.44 mi (963.10 km) |
| Welwyn Garden City to Inzago | 617.73 mi (994.13 km) |
| Welwyn Garden City to Iseo | 630.18 mi (1,014.18 km) |
| Welwyn Garden City to Isernia | 978.74 mi (1,575.13 km) |
| Welwyn Garden City to Isola Capo Rizzuto | 1,215.36 mi (1,955.93 km) |
| Welwyn Garden City to Isola del Liri | 953.13 mi (1,533.91 km) |
| Welwyn Garden City to Isola della Scala | 681.81 mi (1,097.27 km) |
| Welwyn Garden City to Isola Vicentina | 679.49 mi (1,093.54 km) |
| Welwyn Garden City to Ispica | 1,273.03 mi (2,048.75 km) |
| Welwyn Garden City to Istrana | 700.38 mi (1,127.15 km) |
| Welwyn Garden City to Itri | 973.57 mi (1,566.81 km) |
