| Horndean to Idar-Oberstein | 375.70 mi (604.63 km) |
| Horndean to Idstein | 409.37 mi (658.82 km) |
| Horndean to Illertissen | 529.67 mi (852.43 km) |
| Horndean to Illingen | 371.65 mi (598.11 km) |
| Horndean to Ilmenau | 520.03 mi (836.90 km) |
| Horndean to Ilsede | 488.39 mi (785.99 km) |
| Horndean to Ilsenburg | 507.29 mi (816.40 km) |
| Horndean to Ilsfeld | 472.64 mi (760.64 km) |
| Horndean to Ilvesheim | 434.25 mi (698.86 km) |
| Horndean to Immenstadt im Allgau | 555.42 mi (893.86 km) |
| Horndean to Ingelheim | 403.30 mi (649.04 km) |
| Horndean to Ingolstadt | 572.32 mi (921.07 km) |
| Horndean to Iserlohn | 376.65 mi (606.15 km) |
| Horndean to Isernhagen-Sud | 476.26 mi (766.47 km) |
| Horndean to Ismaning | 596.36 mi (959.75 km) |
