| Sleaford to Kluczbork | 802.38 mi (1,291.31 km) |
| Sleaford to Knurow | 838.92 mi (1,350.10 km) |
| Sleaford to Kobylka | 903.38 mi (1,453.86 km) |
| Sleaford to Kokoszki | 777.01 mi (1,250.48 km) |
| Sleaford to Kolbuszowa | 966.03 mi (1,554.67 km) |
| Sleaford to Kolno | 921.49 mi (1,483.00 km) |
| Sleaford to Kolo | 798.85 mi (1,285.63 km) |
| Sleaford to Kolobrzeg | 659.39 mi (1,061.19 km) |
| Sleaford to Koluszki | 854.10 mi (1,374.55 km) |
| Sleaford to Komorniki | 717.70 mi (1,155.02 km) |
| Sleaford to Konin | 783.41 mi (1,260.77 km) |
| Sleaford to Konskie | 889.55 mi (1,431.60 km) |
| Sleaford to Konstancin-Jeziorna | 903.53 mi (1,454.09 km) |
| Sleaford to Konstantynow Lodzki | 834.71 mi (1,343.34 km) |
| Sleaford to Koronowo | 758.33 mi (1,220.42 km) |
