| Caldas da Rainha to Idar-Oberstein | 1,074.01 mi (1,728.45 km) |
| Caldas da Rainha to Idstein | 1,129.18 mi (1,817.24 km) |
| Caldas da Rainha to Illertissen | 1,130.38 mi (1,819.17 km) |
| Caldas da Rainha to Illingen | 1,051.15 mi (1,691.66 km) |
| Caldas da Rainha to Ilmenau | 1,244.29 mi (2,002.49 km) |
| Caldas da Rainha to Ilsede | 1,278.61 mi (2,057.73 km) |
| Caldas da Rainha to Ilsenburg | 1,279.91 mi (2,059.82 km) |
| Caldas da Rainha to Ilsfeld | 1,123.16 mi (1,807.56 km) |
| Caldas da Rainha to Ilvesheim | 1,111.64 mi (1,789.01 km) |
| Caldas da Rainha to Immenstadt im Allgau | 1,117.51 mi (1,798.47 km) |
| Caldas da Rainha to Ingelheim | 1,111.58 mi (1,788.91 km) |
| Caldas da Rainha to Ingolstadt | 1,202.04 mi (1,934.49 km) |
| Caldas da Rainha to Iserlohn | 1,156.28 mi (1,860.85 km) |
| Caldas da Rainha to Isernhagen-Sud | 1,274.54 mi (2,051.18 km) |
| Caldas da Rainha to Ismaning | 1,197.41 mi (1,927.05 km) |
