| Boulder to Koscian | 5,182.59 mi (8,340.58 km) |
| Boulder to Koscielisko | 5,421.41 mi (8,724.92 km) |
| Boulder to Koscierzyna | 5,115.29 mi (8,232.26 km) |
| Boulder to Kostrzyn | 5,182.91 mi (8,341.08 km) |
| Boulder to Kostrzyn nad Odra | 5,099.97 mi (8,207.61 km) |
| Boulder to Koszalin | 5,061.93 mi (8,146.39 km) |
| Boulder to Kowary | 5,224.69 mi (8,408.33 km) |
| Boulder to Kozienice | 5,345.43 mi (8,602.64 km) |
| Boulder to Kozuchow | 5,169.24 mi (8,319.09 km) |
| Boulder to Kozy | 5,369.42 mi (8,641.24 km) |
| Boulder to Krakow | 5,381.63 mi (8,660.89 km) |
| Boulder to Krapkowice | 5,303.83 mi (8,535.69 km) |
| Boulder to Krasnik | 5,398.96 mi (8,688.78 km) |
| Boulder to Krasnystaw | 5,421.28 mi (8,724.71 km) |
| Boulder to Krosno | 5,452.87 mi (8,775.54 km) |
