| Koper to Karis | 1,082.84 mi (1,742.66 km) |
| Koper to Karkkila | 1,119.92 mi (1,802.33 km) |
| Koper to Kauhajoki | 1,213.42 mi (1,952.82 km) |
| Koper to Kauhava | 1,266.50 mi (2,038.23 km) |
| Koper to Kauniainen | 1,108.90 mi (1,784.60 km) |
| Koper to Kemi | 1,452.39 mi (2,337.39 km) |
| Koper to Kemijarvi | 1,546.52 mi (2,488.89 km) |
| Koper to Kempele | 1,410.53 mi (2,270.03 km) |
| Koper to Kerava | 1,126.08 mi (1,812.24 km) |
| Koper to Keuruu | 1,233.88 mi (1,985.73 km) |
| Koper to Kiiminki | 1,427.64 mi (2,297.56 km) |
| Koper to Kirkkonummi | 1,097.62 mi (1,766.45 km) |
| Koper to Kitee | 1,316.16 mi (2,118.16 km) |
| Koper to Kiuruvesi | 1,346.73 mi (2,167.36 km) |
| Koper to Kivisto | 1,117.22 mi (1,797.99 km) |
