| Troisdorf to Impruneta | 528.71 mi (850.87 km) |
| Troisdorf to Induno Olona | 351.65 mi (565.92 km) |
| Troisdorf to Inverigo | 363.71 mi (585.34 km) |
| Troisdorf to Inveruno | 374.36 mi (602.47 km) |
| Troisdorf to Inzago | 380.38 mi (612.17 km) |
| Troisdorf to Iseo | 380.41 mi (612.21 km) |
| Troisdorf to Isernia | 720.30 mi (1,159.21 km) |
| Troisdorf to Isola Capo Rizzuto | 950.93 mi (1,530.38 km) |
| Troisdorf to Isola del Liri | 701.16 mi (1,128.42 km) |
| Troisdorf to Isola della Scala | 422.46 mi (679.89 km) |
| Troisdorf to Isola Vicentina | 408.87 mi (658.01 km) |
| Troisdorf to Ispica | 1,042.26 mi (1,677.35 km) |
| Troisdorf to Istrana | 421.11 mi (677.72 km) |
| Troisdorf to Itri | 725.53 mi (1,167.63 km) |
| Troisdorf to Ittiri | 709.10 mi (1,141.19 km) |
