| Mason City to Koscian | 4,644.03 mi (7,473.84 km) |
| Mason City to Koscielisko | 4,879.66 mi (7,853.05 km) |
| Mason City to Koscierzyna | 4,591.14 mi (7,388.72 km) |
| Mason City to Kostrzyn | 4,647.63 mi (7,479.64 km) |
| Mason City to Kostrzyn nad Odra | 4,558.05 mi (7,335.47 km) |
| Mason City to Koszalin | 4,532.79 mi (7,294.81 km) |
| Mason City to Kowary | 4,677.37 mi (7,527.49 km) |
| Mason City to Kozienice | 4,820.07 mi (7,757.15 km) |
| Mason City to Kozuchow | 4,625.88 mi (7,444.63 km) |
| Mason City to Kozy | 4,827.99 mi (7,769.90 km) |
| Mason City to Krakow | 4,843.65 mi (7,795.11 km) |
| Mason City to Krapkowice | 4,761.48 mi (7,662.86 km) |
| Mason City to Krasnik | 4,872.60 mi (7,841.68 km) |
| Mason City to Krasnystaw | 4,898.54 mi (7,883.44 km) |
| Mason City to Krosno | 4,919.15 mi (7,916.61 km) |
