| Serres to Karis | 1,311.92 mi (2,111.33 km) |
| Serres to Karkkila | 1,344.16 mi (2,163.22 km) |
| Serres to Kauhajoki | 1,476.13 mi (2,375.60 km) |
| Serres to Kauhava | 1,521.33 mi (2,448.35 km) |
| Serres to Kauniainen | 1,322.95 mi (2,129.09 km) |
| Serres to Kemi | 1,703.80 mi (2,742.01 km) |
| Serres to Kemijarvi | 1,777.35 mi (2,860.36 km) |
| Serres to Kempele | 1,648.27 mi (2,652.63 km) |
| Serres to Kerava | 1,336.28 mi (2,150.54 km) |
| Serres to Keuruu | 1,463.84 mi (2,355.82 km) |
| Serres to Kiiminki | 1,664.01 mi (2,677.97 km) |
| Serres to Kirkkonummi | 1,315.60 mi (2,117.26 km) |
| Serres to Kitee | 1,477.57 mi (2,377.92 km) |
| Serres to Kiuruvesi | 1,564.14 mi (2,517.24 km) |
| Serres to Kivisto | 1,330.52 mi (2,141.27 km) |
