| Sleaford to Kidricevo | 852.71 mi (1,372.31 km) |
| Sleaford to Kobarid | 778.60 mi (1,253.03 km) |
| Sleaford to Kobilje | 863.64 mi (1,389.90 km) |
| Sleaford to Kocevje | 852.25 mi (1,371.56 km) |
| Sleaford to Komen | 804.81 mi (1,295.21 km) |
| Sleaford to Komenda | 814.94 mi (1,311.51 km) |
| Sleaford to Koper | 816.88 mi (1,314.64 km) |
| Sleaford to Kostanjevica na Krki | 863.44 mi (1,389.57 km) |
| Sleaford to Kostel | 860.30 mi (1,384.51 km) |
| Sleaford to Kozje | 858.22 mi (1,381.18 km) |
| Sleaford to Kranj | 807.52 mi (1,299.57 km) |
| Sleaford to Kranjska Gora | 775.20 mi (1,247.57 km) |
| Sleaford to Krizevci | 858.94 mi (1,382.33 km) |
| Sleaford to Krsko | 860.93 mi (1,385.54 km) |
| Sleaford to Kuzma | 845.62 mi (1,360.89 km) |
