| Sioux City to Idar-Oberstein | 4,579.14 mi (7,369.41 km) |
| Sioux City to Idstein | 4,590.47 mi (7,387.65 km) |
| Sioux City to Illertissen | 4,741.77 mi (7,631.15 km) |
| Sioux City to Illingen | 4,584.40 mi (7,377.88 km) |
| Sioux City to Ilmenau | 4,659.70 mi (7,499.06 km) |
| Sioux City to Ilsede | 4,565.30 mi (7,347.14 km) |
| Sioux City to Ilsenburg | 4,599.28 mi (7,401.82 km) |
| Sioux City to Ilsfeld | 4,675.54 mi (7,524.55 km) |
| Sioux City to Ilvesheim | 4,633.22 mi (7,456.45 km) |
| Sioux City to Immenstadt im Allgau | 4,775.76 mi (7,685.85 km) |
| Sioux City to Ingelheim | 4,593.62 mi (7,392.72 km) |
| Sioux City to Ingolstadt | 4,763.48 mi (7,666.09 km) |
| Sioux City to Iserlohn | 4,519.68 mi (7,273.73 km) |
| Sioux City to Isernhagen-Sud | 4,547.32 mi (7,318.21 km) |
| Sioux City to Ismaning | 4,796.50 mi (7,719.22 km) |
