| Clay to Krosno Odrzanskie | 4,872.41 mi (7,841.38 km) |
| Clay to Krotoszyn | 4,970.17 mi (7,998.72 km) |
| Clay to Kruszwica | 4,965.88 mi (7,991.82 km) |
| Clay to Krynica | 5,185.58 mi (8,345.39 km) |
| Clay to Krzeszowice | 5,108.77 mi (8,221.77 km) |
| Clay to Kudowa-Zdroj | 4,971.21 mi (8,000.39 km) |
| Clay to Kutno | 5,019.21 mi (8,077.64 km) |
| Clay to Kwidzyn | 4,947.85 mi (7,962.79 km) |
| Clay to Lancut | 5,206.18 mi (8,378.54 km) |
| Clay to Lapy | 5,112.14 mi (8,227.20 km) |
| Clay to Lask | 5,035.12 mi (8,103.24 km) |
| Clay to Laziska Gorne | 5,079.21 mi (8,174.20 km) |
| Clay to Lebork | 4,877.58 mi (7,849.70 km) |
| Clay to Leczna | 5,179.70 mi (8,335.92 km) |
| Clay to Leczyca | 5,020.19 mi (8,079.21 km) |
