| Gretna to Idar-Oberstein | 4,976.81 mi (8,009.41 km) |
| Gretna to Idstein | 5,000.14 mi (8,046.94 km) |
| Gretna to Illertissen | 5,135.32 mi (8,264.50 km) |
| Gretna to Illingen | 4,976.15 mi (8,008.33 km) |
| Gretna to Ilmenau | 5,089.73 mi (8,191.13 km) |
| Gretna to Ilsede | 5,011.77 mi (8,065.66 km) |
| Gretna to Ilsenburg | 5,043.19 mi (8,116.23 km) |
| Gretna to Ilsfeld | 5,075.15 mi (8,167.67 km) |
| Gretna to Ilvesheim | 5,034.58 mi (8,102.37 km) |
| Gretna to Immenstadt im Allgau | 5,161.68 mi (8,306.92 km) |
| Gretna to Ingelheim | 4,998.84 mi (8,044.86 km) |
| Gretna to Ingolstadt | 5,171.87 mi (8,323.33 km) |
| Gretna to Iserlohn | 4,941.64 mi (7,952.80 km) |
| Gretna to Isernhagen-Sud | 4,994.29 mi (8,037.53 km) |
| Gretna to Ismaning | 5,199.53 mi (8,367.83 km) |
