| Donegal to Karis | 1,227.90 mi (1,976.11 km) |
| Donegal to Karkkila | 1,249.09 mi (2,010.21 km) |
| Donegal to Kauhajoki | 1,202.08 mi (1,934.56 km) |
| Donegal to Kauhava | 1,239.88 mi (1,995.39 km) |
| Donegal to Kauniainen | 1,265.25 mi (2,036.23 km) |
| Donegal to Kemi | 1,334.31 mi (2,147.36 km) |
| Donegal to Kemijarvi | 1,431.71 mi (2,304.11 km) |
| Donegal to Kempele | 1,343.20 mi (2,161.68 km) |
| Donegal to Kerava | 1,278.48 mi (2,057.51 km) |
| Donegal to Keuruu | 1,279.45 mi (2,059.08 km) |
| Donegal to Kiiminki | 1,354.87 mi (2,180.45 km) |
| Donegal to Kirkkonummi | 1,254.02 mi (2,018.15 km) |
| Donegal to Kitee | 1,452.16 mi (2,337.03 km) |
| Donegal to Kiuruvesi | 1,355.35 mi (2,181.23 km) |
| Donegal to Kivisto | 1,269.49 mi (2,043.05 km) |
