| Westbrook to Idar-Oberstein | 3,536.47 mi (5,691.41 km) |
| Westbrook to Idstein | 3,560.28 mi (5,729.71 km) |
| Westbrook to Illertissen | 3,694.82 mi (5,946.24 km) |
| Westbrook to Illingen | 3,535.68 mi (5,690.12 km) |
| Westbrook to Ilmenau | 3,651.26 mi (5,876.13 km) |
| Westbrook to Ilsede | 3,575.56 mi (5,754.31 km) |
| Westbrook to Ilsenburg | 3,606.50 mi (5,804.10 km) |
| Westbrook to Ilsfeld | 3,634.80 mi (5,849.64 km) |
| Westbrook to Ilvesheim | 3,594.31 mi (5,784.48 km) |
| Westbrook to Immenstadt im Allgau | 3,721.19 mi (5,988.67 km) |
| Westbrook to Ingelheim | 3,558.76 mi (5,727.27 km) |
| Westbrook to Ingolstadt | 3,731.73 mi (6,005.64 km) |
| Westbrook to Iserlohn | 3,502.79 mi (5,637.20 km) |
| Westbrook to Isernhagen-Sud | 3,558.23 mi (5,726.42 km) |
| Westbrook to Ismaning | 3,759.17 mi (6,049.80 km) |
