| Dubuque to Illzach | 4,454.72 mi (7,169.18 km) |
| Dubuque to Ingre | 4,238.16 mi (6,820.66 km) |
| Dubuque to Irigny | 4,442.72 mi (7,149.87 km) |
| Dubuque to Isbergues | 4,161.97 mi (6,698.05 km) |
| Dubuque to Issoire | 4,385.60 mi (7,057.95 km) |
| Dubuque to Issoudun | 4,281.56 mi (6,890.50 km) |
| Dubuque to Issy-les-Moulineaux | 4,221.51 mi (6,793.87 km) |
| Dubuque to Istres | 4,536.86 mi (7,301.37 km) |
| Dubuque to Ivry-sur-Seine | 4,226.12 mi (6,801.28 km) |
| Dubuque to Jarville-la-Malgrange | 4,376.32 mi (7,043.01 km) |
| Dubuque to Jeumont | 4,235.18 mi (6,815.86 km) |
| Dubuque to Joigny | 4,296.64 mi (6,914.77 km) |
| Dubuque to Joinville-le-Pont | 4,229.36 mi (6,806.50 km) |
| Dubuque to Joue-les-Tours | 4,213.94 mi (6,781.68 km) |
| Dubuque to Jouy-le-Moutier | 4,205.70 mi (6,768.42 km) |
