| Potters Bar to Koscian | 716.68 mi (1,153.38 km) |
| Potters Bar to Koscielisko | 894.71 mi (1,439.89 km) |
| Potters Bar to Koscierzyna | 772.91 mi (1,243.88 km) |
| Potters Bar to Kostrzyn | 739.39 mi (1,189.93 km) |
| Potters Bar to Kostrzyn nad Odra | 631.52 mi (1,016.33 km) |
| Potters Bar to Koszalin | 701.16 mi (1,128.41 km) |
| Potters Bar to Kowary | 694.15 mi (1,117.13 km) |
| Potters Bar to Kozienice | 929.17 mi (1,495.36 km) |
| Potters Bar to Kozuchow | 674.20 mi (1,085.02 km) |
| Potters Bar to Kozy | 851.41 mi (1,370.22 km) |
| Potters Bar to Krakow | 881.52 mi (1,418.67 km) |
| Potters Bar to Krapkowice | 790.29 mi (1,271.85 km) |
| Potters Bar to Krasnik | 965.21 mi (1,553.36 km) |
| Potters Bar to Krasnystaw | 1,005.42 mi (1,618.07 km) |
| Potters Bar to Krosno | 966.31 mi (1,555.13 km) |
