| Portimao to Idar-Oberstein | 1,173.14 mi (1,887.99 km) |
| Portimao to Idstein | 1,228.45 mi (1,977.00 km) |
| Portimao to Illertissen | 1,211.30 mi (1,949.40 km) |
| Portimao to Illingen | 1,149.03 mi (1,849.19 km) |
| Portimao to Ilmenau | 1,339.12 mi (2,155.11 km) |
| Portimao to Ilsede | 1,383.82 mi (2,227.05 km) |
| Portimao to Ilsenburg | 1,381.86 mi (2,223.89 km) |
| Portimao to Ilsfeld | 1,212.21 mi (1,950.86 km) |
| Portimao to Ilvesheim | 1,205.44 mi (1,939.97 km) |
| Portimao to Immenstadt im Allgau | 1,193.24 mi (1,920.33 km) |
| Portimao to Ingelheim | 1,210.03 mi (1,947.36 km) |
| Portimao to Ingolstadt | 1,283.41 mi (2,065.45 km) |
| Portimao to Iserlohn | 1,263.73 mi (2,033.78 km) |
| Portimao to Isernhagen-Sud | 1,381.38 mi (2,223.12 km) |
| Portimao to Ismaning | 1,274.42 mi (2,050.99 km) |
