| Clay to Kluczbork | 5,024.59 mi (8,086.29 km) |
| Clay to Knurow | 5,070.52 mi (8,160.21 km) |
| Clay to Kobylka | 5,079.86 mi (8,175.24 km) |
| Clay to Kokoszki | 4,910.04 mi (7,901.95 km) |
| Clay to Kolbuszowa | 5,182.01 mi (8,339.63 km) |
| Clay to Kolno | 5,063.02 mi (8,148.14 km) |
| Clay to Kolo | 4,994.37 mi (8,037.66 km) |
| Clay to Kolobrzeg | 4,815.38 mi (7,749.60 km) |
| Clay to Koluszki | 5,052.94 mi (8,131.93 km) |
| Clay to Komorniki | 4,922.48 mi (7,921.97 km) |
| Clay to Konin | 4,980.65 mi (8,015.58 km) |
| Clay to Konskie | 5,096.13 mi (8,201.43 km) |
| Clay to Konstancin-Jeziorna | 5,086.68 mi (8,186.22 km) |
| Clay to Konstantynow Lodzki | 5,036.26 mi (8,105.08 km) |
| Clay to Koronowo | 4,928.50 mi (7,931.66 km) |
