| Castro Daire to Idar-Oberstein | 955.79 mi (1,538.20 km) |
| Castro Daire to Idstein | 1,010.83 mi (1,626.78 km) |
| Castro Daire to Illertissen | 1,017.31 mi (1,637.21 km) |
| Castro Daire to Illingen | 933.28 mi (1,501.96 km) |
| Castro Daire to Ilmenau | 1,126.81 mi (1,813.43 km) |
| Castro Daire to Ilsede | 1,158.92 mi (1,865.10 km) |
| Castro Daire to Ilsenburg | 1,160.81 mi (1,868.14 km) |
| Castro Daire to Ilsfeld | 1,007.52 mi (1,621.44 km) |
| Castro Daire to Ilvesheim | 994.68 mi (1,600.78 km) |
| Castro Daire to Immenstadt im Allgau | 1,006.34 mi (1,619.55 km) |
| Castro Daire to Ingelheim | 993.46 mi (1,598.81 km) |
| Castro Daire to Ingolstadt | 1,088.60 mi (1,751.93 km) |
| Castro Daire to Iserlohn | 1,036.33 mi (1,667.81 km) |
| Castro Daire to Isernhagen-Sud | 1,154.59 mi (1,858.14 km) |
| Castro Daire to Ismaning | 1,085.49 mi (1,746.93 km) |
