| Helena to Idar-Oberstein | 4,859.65 mi (7,820.85 km) |
| Helena to Idstein | 4,859.46 mi (7,820.55 km) |
| Helena to Illertissen | 5,018.70 mi (8,076.82 km) |
| Helena to Illingen | 4,870.06 mi (7,837.61 km) |
| Helena to Ilmenau | 4,906.50 mi (7,896.25 km) |
| Helena to Ilsede | 4,800.80 mi (7,726.15 km) |
| Helena to Ilsenburg | 4,835.66 mi (7,782.24 km) |
| Helena to Ilsfeld | 4,949.90 mi (7,966.09 km) |
| Helena to Ilvesheim | 4,907.90 mi (7,898.50 km) |
| Helena to Immenstadt im Allgau | 5,058.10 mi (8,140.23 km) |
| Helena to Ingelheim | 4,866.56 mi (7,831.97 km) |
| Helena to Ingolstadt | 5,025.83 mi (8,088.29 km) |
| Helena to Iserlohn | 4,780.53 mi (7,693.52 km) |
| Helena to Isernhagen-Sud | 4,783.18 mi (7,697.78 km) |
| Helena to Ismaning | 5,062.31 mi (8,147.01 km) |
