| Langenfeld to Idar-Oberstein | 98.40 mi (158.37 km) |
| Langenfeld to Idstein | 84.83 mi (136.52 km) |
| Langenfeld to Illertissen | 244.45 mi (393.41 km) |
| Langenfeld to Illingen | 120.33 mi (193.65 km) |
| Langenfeld to Ilmenau | 175.51 mi (282.46 km) |
| Langenfeld to Ilsede | 159.64 mi (256.91 km) |
| Langenfeld to Ilsenburg | 168.73 mi (271.55 km) |
| Langenfeld to Ilsfeld | 175.45 mi (282.36 km) |
| Langenfeld to Ilvesheim | 134.17 mi (215.92 km) |
| Langenfeld to Immenstadt im Allgau | 285.92 mi (460.15 km) |
| Langenfeld to Ingelheim | 92.66 mi (149.12 km) |
| Langenfeld to Ingolstadt | 256.91 mi (413.45 km) |
| Langenfeld to Iserlohn | 36.06 mi (58.03 km) |
| Langenfeld to Isernhagen-Sud | 154.04 mi (247.90 km) |
| Langenfeld to Ismaning | 290.53 mi (467.56 km) |
