| Twickenham to Imola | 741.29 mi (1,193.00 km) |
| Twickenham to Impruneta | 759.67 mi (1,222.57 km) |
| Twickenham to Induno Olona | 569.20 mi (916.04 km) |
| Twickenham to Inverigo | 587.85 mi (946.05 km) |
| Twickenham to Inveruno | 586.56 mi (943.98 km) |
| Twickenham to Inzago | 606.74 mi (976.45 km) |
| Twickenham to Iseo | 620.16 mi (998.05 km) |
| Twickenham to Isernia | 967.73 mi (1,557.41 km) |
| Twickenham to Isola Capo Rizzuto | 1,204.40 mi (1,938.30 km) |
| Twickenham to Isola del Liri | 941.56 mi (1,515.29 km) |
| Twickenham to Isola della Scala | 672.28 mi (1,081.94 km) |
| Twickenham to Isola Vicentina | 671.13 mi (1,080.08 km) |
| Twickenham to Ispica | 1,258.75 mi (2,025.76 km) |
| Twickenham to Istrana | 692.84 mi (1,115.02 km) |
| Twickenham to Itri | 961.56 mi (1,547.48 km) |
