| Herdecke to Impruneta | 561.90 mi (904.30 km) |
| Herdecke to Induno Olona | 388.74 mi (625.62 km) |
| Herdecke to Inverigo | 399.90 mi (643.57 km) |
| Herdecke to Inveruno | 411.63 mi (662.45 km) |
| Herdecke to Inzago | 416.04 mi (669.55 km) |
| Herdecke to Iseo | 414.34 mi (666.82 km) |
| Herdecke to Isernia | 749.56 mi (1,206.30 km) |
| Herdecke to Isola Capo Rizzuto | 978.04 mi (1,574.01 km) |
| Herdecke to Isola del Liri | 731.64 mi (1,177.46 km) |
| Herdecke to Isola della Scala | 454.21 mi (730.98 km) |
| Herdecke to Isola Vicentina | 438.64 mi (705.92 km) |
| Herdecke to Ispica | 1,074.37 mi (1,729.04 km) |
| Herdecke to Istrana | 448.76 mi (722.22 km) |
| Herdecke to Itri | 756.48 mi (1,217.44 km) |
| Herdecke to Ittiri | 748.16 mi (1,204.05 km) |
