| Allentown to Idar-Oberstein | 3,874.90 mi (6,236.05 km) |
| Allentown to Idstein | 3,898.81 mi (6,274.52 km) |
| Allentown to Illertissen | 4,033.12 mi (6,490.67 km) |
| Allentown to Illingen | 3,874.01 mi (6,234.62 km) |
| Allentown to Ilmenau | 3,989.79 mi (6,420.94 km) |
| Allentown to Ilsede | 3,913.86 mi (6,298.75 km) |
| Allentown to Ilsenburg | 3,944.86 mi (6,348.64 km) |
| Allentown to Ilsfeld | 3,973.21 mi (6,394.26 km) |
| Allentown to Ilvesheim | 3,932.76 mi (6,329.16 km) |
| Allentown to Immenstadt im Allgau | 4,059.31 mi (6,532.82 km) |
| Allentown to Ingelheim | 3,897.26 mi (6,272.03 km) |
| Allentown to Ingolstadt | 4,070.21 mi (6,550.38 km) |
| Allentown to Iserlohn | 3,841.34 mi (6,182.03 km) |
| Allentown to Isernhagen-Sud | 3,896.51 mi (6,270.83 km) |
| Allentown to Ismaning | 4,097.59 mi (6,594.43 km) |
