| Sleaford to Isny im Allgau | 587.84 mi (946.04 km) |
| Sleaford to Isselburg | 300.72 mi (483.97 km) |
| Sleaford to Issum | 305.96 mi (492.39 km) |
| Sleaford to Itzehoe | 413.12 mi (664.85 km) |
| Sleaford to Jena | 529.76 mi (852.57 km) |
| Sleaford to Jever | 345.53 mi (556.07 km) |
| Sleaford to Jork | 418.47 mi (673.46 km) |
| Sleaford to Juchen | 321.50 mi (517.40 km) |
| Sleaford to Julich | 321.77 mi (517.84 km) |
| Sleaford to Juterbog | 570.65 mi (918.37 km) |
| Sleaford to Kaarst | 322.48 mi (518.99 km) |
| Sleaford to Kaiserslautern | 430.37 mi (692.61 km) |
| Sleaford to Kalkar | 295.80 mi (476.04 km) |
| Sleaford to Kall | 342.11 mi (550.57 km) |
| Sleaford to Kaltenkirchen | 430.71 mi (693.16 km) |
