| Leighton Buzzard to Idar-Oberstein | 379.76 mi (611.17 km) |
| Leighton Buzzard to Idstein | 404.98 mi (651.75 km) |
| Leighton Buzzard to Illertissen | 540.04 mi (869.10 km) |
| Leighton Buzzard to Illingen | 380.56 mi (612.45 km) |
| Leighton Buzzard to Ilmenau | 506.93 mi (815.83 km) |
| Leighton Buzzard to Ilsede | 460.58 mi (741.24 km) |
| Leighton Buzzard to Ilsenburg | 483.28 mi (777.77 km) |
| Leighton Buzzard to Ilsfeld | 478.14 mi (769.49 km) |
| Leighton Buzzard to Ilvesheim | 437.42 mi (703.96 km) |
| Leighton Buzzard to Immenstadt im Allgau | 570.31 mi (917.83 km) |
| Leighton Buzzard to Ingelheim | 402.24 mi (647.34 km) |
| Leighton Buzzard to Ingolstadt | 574.93 mi (925.26 km) |
| Leighton Buzzard to Iserlohn | 358.73 mi (577.33 km) |
| Leighton Buzzard to Isernhagen-Sud | 446.73 mi (718.95 km) |
| Leighton Buzzard to Ismaning | 602.46 mi (969.57 km) |
