| Herndon to Idar-Oberstein | 4,024.88 mi (6,477.41 km) |
| Herndon to Idstein | 4,049.08 mi (6,516.36 km) |
| Herndon to Illertissen | 4,182.85 mi (6,731.65 km) |
| Herndon to Illingen | 4,023.83 mi (6,475.72 km) |
| Herndon to Ilmenau | 4,140.45 mi (6,663.40 km) |
| Herndon to Ilsede | 4,064.85 mi (6,541.74 km) |
| Herndon to Ilsenburg | 4,095.79 mi (6,591.54 km) |
| Herndon to Ilsfeld | 4,123.16 mi (6,635.59 km) |
| Herndon to Ilvesheim | 4,082.79 mi (6,570.61 km) |
| Herndon to Immenstadt im Allgau | 4,208.79 mi (6,773.39 km) |
| Herndon to Ingelheim | 4,047.42 mi (6,513.69 km) |
| Herndon to Ingolstadt | 4,220.33 mi (6,791.96 km) |
| Herndon to Iserlohn | 3,991.92 mi (6,424.38 km) |
| Herndon to Isernhagen-Sud | 4,047.51 mi (6,513.84 km) |
| Herndon to Ismaning | 4,247.54 mi (6,835.75 km) |
