| Niederkassel to Impruneta | 530.84 mi (854.31 km) |
| Niederkassel to Induno Olona | 352.96 mi (568.03 km) |
| Niederkassel to Inverigo | 365.25 mi (587.82 km) |
| Niederkassel to Inveruno | 375.61 mi (604.49 km) |
| Niederkassel to Inzago | 382.05 mi (614.84 km) |
| Niederkassel to Iseo | 382.45 mi (615.49 km) |
| Niederkassel to Isernia | 723.07 mi (1,163.67 km) |
| Niederkassel to Isola Capo Rizzuto | 953.99 mi (1,535.30 km) |
| Niederkassel to Isola del Liri | 703.75 mi (1,132.58 km) |
| Niederkassel to Isola della Scala | 424.90 mi (683.81 km) |
| Niederkassel to Isola Vicentina | 411.64 mi (662.47 km) |
| Niederkassel to Ispica | 1,044.53 mi (1,681.00 km) |
| Niederkassel to Istrana | 424.20 mi (682.69 km) |
| Niederkassel to Itri | 728.03 mi (1,171.65 km) |
| Niederkassel to Ittiri | 709.73 mi (1,142.20 km) |
