| Castle Rock to Idar-Oberstein | 5,031.55 mi (8,097.49 km) |
| Castle Rock to Idstein | 5,040.02 mi (8,111.12 km) |
| Castle Rock to Illertissen | 5,193.94 mi (8,358.85 km) |
| Castle Rock to Illingen | 5,038.10 mi (8,108.04 km) |
| Castle Rock to Ilmenau | 5,103.72 mi (8,213.65 km) |
| Castle Rock to Ilsede | 5,005.82 mi (8,056.09 km) |
| Castle Rock to Ilsenburg | 5,040.20 mi (8,111.41 km) |
| Castle Rock to Ilsfeld | 5,126.80 mi (8,250.79 km) |
| Castle Rock to Ilvesheim | 5,084.39 mi (8,182.53 km) |
| Castle Rock to Immenstadt im Allgau | 5,229.40 mi (8,415.91 km) |
| Castle Rock to Ingelheim | 5,044.19 mi (8,117.83 km) |
| Castle Rock to Ingolstadt | 5,212.04 mi (8,387.97 km) |
| Castle Rock to Iserlohn | 4,966.82 mi (7,993.33 km) |
| Castle Rock to Isernhagen-Sud | 4,987.86 mi (8,027.18 km) |
| Castle Rock to Ismaning | 5,246.08 mi (8,442.76 km) |
