| Glenn Dale to Idar-Oberstein | 4,000.54 mi (6,438.25 km) |
| Glenn Dale to Idstein | 4,025.03 mi (6,477.67 km) |
| Glenn Dale to Illertissen | 4,158.29 mi (6,692.12 km) |
| Glenn Dale to Illingen | 3,999.34 mi (6,436.31 km) |
| Glenn Dale to Ilmenau | 4,116.87 mi (6,625.47 km) |
| Glenn Dale to Ilsede | 4,041.80 mi (6,504.65 km) |
| Glenn Dale to Ilsenburg | 4,072.64 mi (6,554.29 km) |
| Glenn Dale to Ilsfeld | 4,098.80 mi (6,596.38 km) |
| Glenn Dale to Ilvesheim | 4,058.50 mi (6,531.53 km) |
| Glenn Dale to Immenstadt im Allgau | 4,184.02 mi (6,733.53 km) |
| Glenn Dale to Ingelheim | 4,023.26 mi (6,474.82 km) |
| Glenn Dale to Ingolstadt | 4,196.12 mi (6,753.00 km) |
| Glenn Dale to Iserlohn | 3,968.26 mi (6,386.30 km) |
| Glenn Dale to Isernhagen-Sud | 4,024.50 mi (6,476.80 km) |
| Glenn Dale to Ismaning | 4,223.17 mi (6,796.53 km) |
