| Mason City to Karditsa | 5,444.01 mi (8,761.28 km) |
| Mason City to Kastoria | 5,362.21 mi (8,629.64 km) |
| Mason City to Katerini | 5,418.78 mi (8,720.69 km) |
| Mason City to Keratsini | 5,577.24 mi (8,975.70 km) |
| Mason City to Kerkyra | 5,358.61 mi (8,623.85 km) |
| Mason City to Kiato | 5,543.69 mi (8,921.70 km) |
| Mason City to Kifisia | 5,578.36 mi (8,977.50 km) |
| Mason City to Kilkis | 5,394.94 mi (8,682.31 km) |
| Mason City to Komotini | 5,476.71 mi (8,813.92 km) |
| Mason City to Korinthos | 5,553.83 mi (8,938.02 km) |
| Mason City to Koropi | 5,589.92 mi (8,996.11 km) |
| Mason City to Korydallos | 5,577.58 mi (8,976.24 km) |
| Mason City to Kos | 5,764.42 mi (9,276.94 km) |
| Mason City to Kozani | 5,391.64 mi (8,677.00 km) |
| Mason City to Lagos | 5,465.13 mi (8,795.27 km) |
