| Leiria to Idar-Oberstein | 1,044.51 mi (1,680.97 km) |
| Leiria to Idstein | 1,099.66 mi (1,769.74 km) |
| Leiria to Illertissen | 1,101.63 mi (1,772.91 km) |
| Leiria to Illingen | 1,021.69 mi (1,644.25 km) |
| Leiria to Ilmenau | 1,214.88 mi (1,955.16 km) |
| Leiria to Ilsede | 1,248.97 mi (2,010.02 km) |
| Leiria to Ilsenburg | 1,250.32 mi (2,012.19 km) |
| Leiria to Ilsfeld | 1,094.01 mi (1,760.64 km) |
| Leiria to Ilvesheim | 1,082.30 mi (1,741.79 km) |
| Leiria to Immenstadt im Allgau | 1,089.08 mi (1,752.71 km) |
| Leiria to Ingelheim | 1,082.09 mi (1,741.46 km) |
| Leiria to Ingolstadt | 1,173.24 mi (1,888.14 km) |
| Leiria to Iserlohn | 1,126.61 mi (1,813.11 km) |
| Leiria to Isernhagen-Sud | 1,244.88 mi (2,003.45 km) |
| Leiria to Ismaning | 1,168.86 mi (1,881.10 km) |
