| Mettmann to Idar-Oberstein | 107.39 mi (172.83 km) |
| Mettmann to Idstein | 91.25 mi (146.86 km) |
| Mettmann to Illertissen | 251.53 mi (404.80 km) |
| Mettmann to Illingen | 129.51 mi (208.42 km) |
| Mettmann to Ilmenau | 176.36 mi (283.82 km) |
| Mettmann to Ilsede | 154.44 mi (248.55 km) |
| Mettmann to Ilsenburg | 165.22 mi (265.90 km) |
| Mettmann to Ilsfeld | 182.53 mi (293.75 km) |
| Mettmann to Ilvesheim | 141.63 mi (227.93 km) |
| Mettmann to Immenstadt im Allgau | 293.38 mi (472.15 km) |
| Mettmann to Ingelheim | 100.23 mi (161.31 km) |
| Mettmann to Ingolstadt | 262.06 mi (421.75 km) |
| Mettmann to Iserlohn | 31.60 mi (50.86 km) |
| Mettmann to Isernhagen-Sud | 148.04 mi (238.24 km) |
| Mettmann to Ismaning | 296.19 mi (476.68 km) |
