| Dumbarton to Idar-Oberstein | 655.48 mi (1,054.90 km) |
| Dumbarton to Idstein | 662.13 mi (1,065.60 km) |
| Dumbarton to Illertissen | 817.07 mi (1,314.95 km) |
| Dumbarton to Illingen | 664.27 mi (1,069.03 km) |
| Dumbarton to Ilmenau | 733.16 mi (1,179.90 km) |
| Dumbarton to Ilsede | 647.77 mi (1,042.49 km) |
| Dumbarton to Ilsenburg | 679.92 mi (1,094.23 km) |
| Dumbarton to Ilsfeld | 749.33 mi (1,205.94 km) |
| Dumbarton to Ilvesheim | 706.92 mi (1,137.68 km) |
| Dumbarton to Immenstadt im Allgau | 854.23 mi (1,374.76 km) |
| Dumbarton to Ingelheim | 666.45 mi (1,072.55 km) |
| Dumbarton to Ingolstadt | 834.57 mi (1,343.11 km) |
| Dumbarton to Iserlohn | 590.65 mi (950.56 km) |
| Dumbarton to Isernhagen-Sud | 630.15 mi (1,014.12 km) |
| Dumbarton to Ismaning | 868.23 mi (1,397.28 km) |
