| Great Falls to Idar-Oberstein | 4,789.27 mi (7,707.58 km) |
| Great Falls to Idstein | 4,788.93 mi (7,707.04 km) |
| Great Falls to Illertissen | 4,948.23 mi (7,963.40 km) |
| Great Falls to Illingen | 4,799.75 mi (7,724.45 km) |
| Great Falls to Ilmenau | 4,835.71 mi (7,782.33 km) |
| Great Falls to Ilsede | 4,729.94 mi (7,612.10 km) |
| Great Falls to Ilsenburg | 4,764.79 mi (7,668.19 km) |
| Great Falls to Ilsfeld | 4,879.41 mi (7,852.65 km) |
| Great Falls to Ilvesheim | 4,837.43 mi (7,785.08 km) |
| Great Falls to Immenstadt im Allgau | 4,987.69 mi (8,026.91 km) |
| Great Falls to Ingelheim | 4,796.08 mi (7,718.54 km) |
| Great Falls to Ingolstadt | 4,955.17 mi (7,974.58 km) |
| Great Falls to Iserlohn | 4,709.92 mi (7,579.89 km) |
| Great Falls to Isernhagen-Sud | 4,712.32 mi (7,583.74 km) |
| Great Falls to Ismaning | 4,991.69 mi (8,033.35 km) |
