| Opelika to Idar-Oberstein | 4,649.11 mi (7,482.01 km) |
| Opelika to Idstein | 4,673.40 mi (7,521.11 km) |
| Opelika to Illertissen | 4,806.92 mi (7,735.99 km) |
| Opelika to Illingen | 4,647.96 mi (7,480.17 km) |
| Opelika to Ilmenau | 4,764.66 mi (7,667.98 km) |
| Opelika to Ilsede | 4,688.60 mi (7,545.57 km) |
| Opelika to Ilsenburg | 4,719.66 mi (7,595.56 km) |
| Opelika to Ilsfeld | 4,747.38 mi (7,640.17 km) |
| Opelika to Ilvesheim | 4,707.04 mi (7,575.25 km) |
| Opelika to Immenstadt im Allgau | 4,832.64 mi (7,777.39 km) |
| Opelika to Ingelheim | 4,671.72 mi (7,518.41 km) |
| Opelika to Ingolstadt | 4,844.61 mi (7,796.65 km) |
| Opelika to Iserlohn | 4,616.18 mi (7,429.03 km) |
| Opelika to Isernhagen-Sud | 4,671.23 mi (7,517.62 km) |
| Opelika to Ismaning | 4,871.75 mi (7,840.32 km) |
