| South Portland to Karis | 3,802.41 mi (6,119.39 km) |
| South Portland to Karkkila | 3,803.98 mi (6,121.92 km) |
| South Portland to Kauhajoki | 3,684.58 mi (5,929.76 km) |
| South Portland to Kauhava | 3,689.81 mi (5,938.17 km) |
| South Portland to Kauniainen | 3,829.95 mi (6,163.71 km) |
| South Portland to Kemi | 3,651.63 mi (5,876.73 km) |
| South Portland to Kemijarvi | 3,693.79 mi (5,944.58 km) |
| South Portland to Kempele | 3,700.96 mi (5,956.12 km) |
| South Portland to Kerava | 3,834.80 mi (6,171.51 km) |
| South Portland to Keuruu | 3,762.45 mi (6,055.09 km) |
| South Portland to Kiiminki | 3,701.11 mi (5,956.37 km) |
| South Portland to Kirkkonummi | 3,823.74 mi (6,153.72 km) |
| South Portland to Kitee | 3,919.89 mi (6,308.46 km) |
| South Portland to Kiuruvesi | 3,770.51 mi (6,068.06 km) |
| South Portland to Kivisto | 3,829.74 mi (6,163.37 km) |
