| Mason City to Jicin | 4,677.92 mi (7,528.39 km) |
| Mason City to Jihlava | 4,733.61 mi (7,618.02 km) |
| Mason City to Jindrichuv Hradec | 4,725.74 mi (7,605.34 km) |
| Mason City to Jirkov | 4,611.91 mi (7,422.15 km) |
| Mason City to Kadan | 4,611.55 mi (7,421.57 km) |
| Mason City to Karlovy Vary | 4,604.63 mi (7,410.43 km) |
| Mason City to Karvina | 4,809.09 mi (7,739.49 km) |
| Mason City to Kladno | 4,649.48 mi (7,482.62 km) |
| Mason City to Klasterec nad Ohri | 4,607.81 mi (7,415.55 km) |
| Mason City to Klatovy | 4,656.41 mi (7,493.76 km) |
| Mason City to Kolin | 4,691.69 mi (7,550.55 km) |
| Mason City to Koprivnice | 4,808.36 mi (7,738.31 km) |
| Mason City to Kralupy nad Vltavou | 4,652.41 mi (7,487.34 km) |
| Mason City to Kraluv Dvur | 4,656.36 mi (7,493.68 km) |
| Mason City to Krnov | 4,770.62 mi (7,677.56 km) |
