| Downers Grove to Idar-Oberstein | 4,310.09 mi (6,936.43 km) |
| Downers Grove to Idstein | 4,326.51 mi (6,962.85 km) |
| Downers Grove to Illertissen | 4,472.06 mi (7,197.08 km) |
| Downers Grove to Illingen | 4,312.94 mi (6,941.01 km) |
| Downers Grove to Ilmenau | 4,404.91 mi (7,089.02 km) |
| Downers Grove to Ilsede | 4,317.18 mi (6,947.83 km) |
| Downers Grove to Ilsenburg | 4,350.22 mi (7,001.01 km) |
| Downers Grove to Ilsfeld | 4,407.91 mi (7,093.85 km) |
| Downers Grove to Ilvesheim | 4,366.05 mi (7,026.48 km) |
| Downers Grove to Immenstadt im Allgau | 4,503.14 mi (7,247.10 km) |
| Downers Grove to Ingelheim | 4,327.81 mi (6,964.95 km) |
| Downers Grove to Ingolstadt | 4,500.07 mi (7,242.17 km) |
| Downers Grove to Iserlohn | 4,260.52 mi (6,856.64 km) |
| Downers Grove to Isernhagen-Sud | 4,299.31 mi (6,919.07 km) |
| Downers Grove to Ismaning | 4,531.04 mi (7,292.01 km) |
