| Marinha Grande to Idar-Oberstein | 1,049.39 mi (1,688.82 km) |
| Marinha Grande to Idstein | 1,104.52 mi (1,777.56 km) |
| Marinha Grande to Illertissen | 1,107.20 mi (1,781.86 km) |
| Marinha Grande to Illingen | 1,026.63 mi (1,652.20 km) |
| Marinha Grande to Ilmenau | 1,219.90 mi (1,963.24 km) |
| Marinha Grande to Ilsede | 1,253.52 mi (2,017.34 km) |
| Marinha Grande to Ilsenburg | 1,255.02 mi (2,019.76 km) |
| Marinha Grande to Ilsfeld | 1,099.29 mi (1,769.13 km) |
| Marinha Grande to Ilvesheim | 1,087.39 mi (1,749.99 km) |
| Marinha Grande to Immenstadt im Allgau | 1,094.82 mi (1,761.94 km) |
| Marinha Grande to Ingelheim | 1,086.99 mi (1,749.34 km) |
| Marinha Grande to Ingolstadt | 1,178.77 mi (1,897.04 km) |
| Marinha Grande to Iserlohn | 1,131.08 mi (1,820.30 km) |
| Marinha Grande to Isernhagen-Sud | 1,249.36 mi (2,010.64 km) |
| Marinha Grande to Ismaning | 1,174.54 mi (1,890.23 km) |
