| Potters Bar to Krosno Odrzanskie | 651.27 mi (1,048.11 km) |
| Potters Bar to Krotoszyn | 752.70 mi (1,211.35 km) |
| Potters Bar to Kruszwica | 784.90 mi (1,263.17 km) |
| Potters Bar to Krynica | 937.82 mi (1,509.28 km) |
| Potters Bar to Krzeszowice | 867.23 mi (1,395.67 km) |
| Potters Bar to Kudowa-Zdroj | 716.77 mi (1,153.53 km) |
| Potters Bar to Kutno | 830.54 mi (1,336.62 km) |
| Potters Bar to Kwidzyn | 809.70 mi (1,303.09 km) |
| Potters Bar to Lancut | 979.72 mi (1,576.71 km) |
| Potters Bar to Lapy | 973.51 mi (1,566.71 km) |
| Potters Bar to Lask | 825.81 mi (1,329.01 km) |
| Potters Bar to Laziska Gorne | 833.39 mi (1,341.21 km) |
| Potters Bar to Lebork | 766.85 mi (1,234.13 km) |
| Potters Bar to Leczna | 988.39 mi (1,590.66 km) |
| Potters Bar to Leczyca | 824.74 mi (1,327.29 km) |
