| Duncan to Idar-Oberstein | 5,043.14 mi (8,116.14 km) |
| Duncan to Idstein | 5,058.84 mi (8,141.42 km) |
| Duncan to Illertissen | 5,205.26 mi (8,377.05 km) |
| Duncan to Illingen | 5,046.28 mi (8,121.20 km) |
| Duncan to Ilmenau | 5,135.63 mi (8,265.00 km) |
| Duncan to Ilsede | 5,046.33 mi (8,121.29 km) |
| Duncan to Ilsenburg | 5,079.63 mi (8,174.88 km) |
| Duncan to Ilsfeld | 5,140.82 mi (8,273.35 km) |
| Duncan to Ilvesheim | 5,098.87 mi (8,205.84 km) |
| Duncan to Immenstadt im Allgau | 5,236.68 mi (8,427.62 km) |
| Duncan to Ingelheim | 5,060.42 mi (8,143.96 km) |
| Duncan to Ingolstadt | 5,232.42 mi (8,420.76 km) |
| Duncan to Iserlohn | 4,991.98 mi (8,033.82 km) |
| Duncan to Isernhagen-Sud | 5,028.42 mi (8,092.47 km) |
| Duncan to Ismaning | 5,263.71 mi (8,471.13 km) |
