| Helensburgh to Idar-Oberstein | 663.40 mi (1,067.64 km) |
| Helensburgh to Idstein | 670.03 mi (1,078.31 km) |
| Helensburgh to Illertissen | 824.98 mi (1,327.68 km) |
| Helensburgh to Illingen | 672.17 mi (1,081.76 km) |
| Helensburgh to Ilmenau | 740.89 mi (1,192.35 km) |
| Helensburgh to Ilsede | 655.28 mi (1,054.57 km) |
| Helensburgh to Ilsenburg | 687.47 mi (1,106.38 km) |
| Helensburgh to Ilsfeld | 757.24 mi (1,218.67 km) |
| Helensburgh to Ilvesheim | 714.83 mi (1,150.41 km) |
| Helensburgh to Immenstadt im Allgau | 862.15 mi (1,387.49 km) |
| Helensburgh to Ingelheim | 674.36 mi (1,085.27 km) |
| Helensburgh to Ingolstadt | 842.44 mi (1,355.78 km) |
| Helensburgh to Iserlohn | 598.48 mi (963.16 km) |
| Helensburgh to Isernhagen-Sud | 637.64 mi (1,026.18 km) |
| Helensburgh to Ismaning | 876.12 mi (1,409.98 km) |
