| Hertford to Imola | 747.20 mi (1,202.50 km) |
| Hertford to Impruneta | 767.22 mi (1,234.72 km) |
| Hertford to Induno Olona | 576.37 mi (927.58 km) |
| Hertford to Inverigo | 594.67 mi (957.02 km) |
| Hertford to Inveruno | 594.38 mi (956.56 km) |
| Hertford to Inzago | 613.55 mi (987.42 km) |
| Hertford to Iseo | 625.90 mi (1,007.28 km) |
| Hertford to Isernia | 974.55 mi (1,568.38 km) |
| Hertford to Isola Capo Rizzuto | 1,211.15 mi (1,949.16 km) |
| Hertford to Isola del Liri | 949.01 mi (1,527.28 km) |
| Hertford to Isola della Scala | 677.47 mi (1,090.28 km) |
| Hertford to Isola Vicentina | 675.04 mi (1,086.37 km) |
| Hertford to Ispica | 1,269.28 mi (2,042.70 km) |
| Hertford to Istrana | 695.85 mi (1,119.86 km) |
| Hertford to Itri | 969.50 mi (1,560.27 km) |
