| Cascades to Idar-Oberstein | 4,021.45 mi (6,471.90 km) |
| Cascades to Idstein | 4,045.59 mi (6,510.76 km) |
| Cascades to Illertissen | 4,179.47 mi (6,726.21 km) |
| Cascades to Illingen | 4,020.43 mi (6,470.26 km) |
| Cascades to Ilmenau | 4,136.87 mi (6,657.65 km) |
| Cascades to Ilsede | 4,061.18 mi (6,535.83 km) |
| Cascades to Ilsenburg | 4,092.14 mi (6,585.66 km) |
| Cascades to Ilsfeld | 4,119.74 mi (6,630.09 km) |
| Cascades to Ilvesheim | 4,079.35 mi (6,565.09 km) |
| Cascades to Immenstadt im Allgau | 4,205.46 mi (6,768.03 km) |
| Cascades to Ingelheim | 4,043.96 mi (6,508.13 km) |
| Cascades to Ingolstadt | 4,216.88 mi (6,786.41 km) |
| Cascades to Iserlohn | 3,988.37 mi (6,418.66 km) |
| Cascades to Isernhagen-Sud | 4,043.84 mi (6,507.93 km) |
| Cascades to Ismaning | 4,244.12 mi (6,830.25 km) |
