| Duzce to Idar-Oberstein | 1,303.43 mi (2,097.67 km) |
| Duzce to Idstein | 1,275.59 mi (2,052.87 km) |
| Duzce to Illertissen | 1,151.28 mi (1,852.80 km) |
| Duzce to Illingen | 1,307.26 mi (2,103.82 km) |
| Duzce to Ilmenau | 1,182.91 mi (1,903.71 km) |
| Duzce to Ilsede | 1,263.39 mi (2,033.23 km) |
| Duzce to Ilsenburg | 1,231.12 mi (1,981.30 km) |
| Duzce to Ilsfeld | 1,206.08 mi (1,941.00 km) |
| Duzce to Ilvesheim | 1,244.96 mi (2,003.57 km) |
| Duzce to Immenstadt im Allgau | 1,131.89 mi (1,821.61 km) |
| Duzce to Ingelheim | 1,278.44 mi (2,057.45 km) |
| Duzce to Ingolstadt | 1,106.77 mi (1,781.17 km) |
| Duzce to Iserlohn | 1,331.24 mi (2,142.42 km) |
| Duzce to Isernhagen-Sud | 1,281.11 mi (2,061.74 km) |
| Duzce to Ismaning | 1,082.60 mi (1,742.28 km) |
