| Mason City to Karis | 4,466.58 mi (7,188.27 km) |
| Mason City to Karkkila | 4,458.00 mi (7,174.46 km) |
| Mason City to Kauhajoki | 4,319.32 mi (6,951.28 km) |
| Mason City to Kauhava | 4,309.10 mi (6,934.82 km) |
| Mason City to Kauniainen | 4,485.91 mi (7,219.38 km) |
| Mason City to Kemi | 4,219.16 mi (6,790.09 km) |
| Mason City to Kemijarvi | 4,230.76 mi (6,808.76 km) |
| Mason City to Kempele | 4,277.90 mi (6,884.61 km) |
| Mason City to Kerava | 4,485.92 mi (7,219.38 km) |
| Mason City to Keuruu | 4,386.85 mi (7,059.95 km) |
| Mason City to Kiiminki | 4,273.02 mi (6,876.76 km) |
| Mason City to Kirkkonummi | 4,483.00 mi (7,214.69 km) |
| Mason City to Kitee | 4,516.42 mi (7,268.47 km) |
| Mason City to Kiuruvesi | 4,362.50 mi (7,020.77 km) |
| Mason City to Kivisto | 4,483.45 mi (7,215.42 km) |
