| Sleaford to Idar-Oberstein | 402.95 mi (648.48 km) |
| Sleaford to Idstein | 418.81 mi (674.01 km) |
| Sleaford to Illertissen | 565.56 mi (910.18 km) |
| Sleaford to Illingen | 408.40 mi (657.25 km) |
| Sleaford to Ilmenau | 508.83 mi (818.88 km) |
| Sleaford to Ilsede | 446.79 mi (719.04 km) |
| Sleaford to Ilsenburg | 473.42 mi (761.90 km) |
| Sleaford to Ilsfeld | 500.06 mi (804.76 km) |
| Sleaford to Ilvesheim | 457.99 mi (737.06 km) |
| Sleaford to Immenstadt im Allgau | 599.77 mi (965.24 km) |
| Sleaford to Ingelheim | 419.57 mi (675.23 km) |
| Sleaford to Ingolstadt | 592.14 mi (952.95 km) |
| Sleaford to Iserlohn | 359.69 mi (578.86 km) |
| Sleaford to Isernhagen-Sud | 431.24 mi (694.01 km) |
| Sleaford to Ismaning | 622.80 mi (1,002.30 km) |
