| Casselberry to Idar-Oberstein | 4,677.89 mi (7,528.34 km) |
| Casselberry to Idstein | 4,707.01 mi (7,575.21 km) |
| Casselberry to Illertissen | 4,831.04 mi (7,774.81 km) |
| Casselberry to Illingen | 4,674.16 mi (7,522.34 km) |
| Casselberry to Ilmenau | 4,805.63 mi (7,733.91 km) |
| Casselberry to Ilsede | 4,738.28 mi (7,625.53 km) |
| Casselberry to Ilsenburg | 4,767.63 mi (7,672.76 km) |
| Casselberry to Ilsfeld | 4,775.22 mi (7,684.98 km) |
| Casselberry to Ilvesheim | 4,736.38 mi (7,622.47 km) |
| Casselberry to Immenstadt im Allgau | 4,852.97 mi (7,810.10 km) |
| Casselberry to Ingelheim | 4,703.41 mi (7,569.40 km) |
| Casselberry to Ingolstadt | 4,874.58 mi (7,844.87 km) |
| Casselberry to Iserlohn | 4,656.29 mi (7,493.57 km) |
| Casselberry to Isernhagen-Sud | 4,721.45 mi (7,598.44 km) |
| Casselberry to Ismaning | 4,898.88 mi (7,883.98 km) |
