| Duluth to Idar-Oberstein | 4,222.41 mi (6,795.31 km) |
| Duluth to Idstein | 4,232.84 mi (6,812.10 km) |
| Duluth to Illertissen | 4,385.01 mi (7,057.00 km) |
| Duluth to Illingen | 4,228.12 mi (6,804.50 km) |
| Duluth to Ilmenau | 4,300.65 mi (6,921.23 km) |
| Duluth to Ilsede | 4,205.50 mi (6,768.09 km) |
| Duluth to Ilsenburg | 4,239.56 mi (6,822.91 km) |
| Duluth to Ilsfeld | 4,318.46 mi (6,949.90 km) |
| Duluth to Ilvesheim | 4,276.10 mi (6,881.72 km) |
| Duluth to Immenstadt im Allgau | 4,419.52 mi (7,112.53 km) |
| Duluth to Ingelheim | 4,236.30 mi (6,817.67 km) |
| Duluth to Ingolstadt | 4,405.62 mi (7,090.17 km) |
| Duluth to Iserlohn | 4,161.36 mi (6,697.06 km) |
| Duluth to Isernhagen-Sud | 4,187.51 mi (6,739.15 km) |
| Duluth to Ismaning | 4,438.94 mi (7,143.79 km) |
