| Letterkenny to Karis | 1,203.97 mi (1,937.60 km) |
| Letterkenny to Karkkila | 1,224.90 mi (1,971.29 km) |
| Letterkenny to Kauhajoki | 1,176.94 mi (1,894.10 km) |
| Letterkenny to Kauhava | 1,214.52 mi (1,954.59 km) |
| Letterkenny to Kauniainen | 1,241.25 mi (1,997.61 km) |
| Letterkenny to Kemi | 1,308.40 mi (2,105.67 km) |
| Letterkenny to Kemijarvi | 1,405.74 mi (2,262.31 km) |
| Letterkenny to Kempele | 1,317.45 mi (2,120.23 km) |
| Letterkenny to Kerava | 1,254.38 mi (2,018.74 km) |
| Letterkenny to Keuruu | 1,254.47 mi (2,018.87 km) |
| Letterkenny to Kiiminki | 1,329.08 mi (2,138.95 km) |
| Letterkenny to Kirkkonummi | 1,230.07 mi (1,979.61 km) |
| Letterkenny to Kitee | 1,427.34 mi (2,297.08 km) |
| Letterkenny to Kiuruvesi | 1,329.94 mi (2,140.33 km) |
| Letterkenny to Kivisto | 1,245.43 mi (2,004.33 km) |
