| Harrow on the Hill to Idar-Oberstein | 358.48 mi (576.92 km) |
| Harrow on the Hill to Idstein | 386.19 mi (621.52 km) |
| Harrow on the Hill to Illertissen | 517.53 mi (832.88 km) |
| Harrow on the Hill to Illingen | 358.05 mi (576.22 km) |
| Harrow on the Hill to Ilmenau | 491.23 mi (790.56 km) |
| Harrow on the Hill to Ilsede | 450.38 mi (724.81 km) |
| Harrow on the Hill to Ilsenburg | 471.57 mi (758.92 km) |
| Harrow on the Hill to Ilsfeld | 456.75 mi (735.06 km) |
| Harrow on the Hill to Ilvesheim | 416.55 mi (670.37 km) |
| Harrow on the Hill to Immenstadt im Allgau | 546.80 mi (879.98 km) |
| Harrow on the Hill to Ingelheim | 382.45 mi (615.50 km) |
| Harrow on the Hill to Ingolstadt | 554.49 mi (892.37 km) |
| Harrow on the Hill to Iserlohn | 344.32 mi (554.13 km) |
| Harrow on the Hill to Isernhagen-Sud | 437.22 mi (703.64 km) |
| Harrow on the Hill to Ismaning | 581.12 mi (935.23 km) |
