| Romulus to Idar-Oberstein | 4,113.78 mi (6,620.49 km) |
| Romulus to Idstein | 4,132.33 mi (6,650.34 km) |
| Romulus to Illertissen | 4,275.03 mi (6,879.99 km) |
| Romulus to Illingen | 4,115.60 mi (6,623.41 km) |
| Romulus to Ilmenau | 4,214.46 mi (6,782.51 km) |
| Romulus to Ilsede | 4,129.91 mi (6,646.44 km) |
| Romulus to Ilsenburg | 4,162.44 mi (6,698.81 km) |
| Romulus to Ilsfeld | 4,211.94 mi (6,778.46 km) |
| Romulus to Ilvesheim | 4,170.38 mi (6,711.58 km) |
| Romulus to Immenstadt im Allgau | 4,304.81 mi (6,927.92 km) |
| Romulus to Ingelheim | 4,132.83 mi (6,651.15 km) |
| Romulus to Ingolstadt | 4,305.65 mi (6,929.27 km) |
| Romulus to Iserlohn | 4,068.59 mi (6,547.76 km) |
| Romulus to Isernhagen-Sud | 4,112.15 mi (6,617.86 km) |
| Romulus to Ismaning | 4,335.67 mi (6,977.59 km) |
