| Donostia to Karis | 1,575.80 mi (2,536.00 km) |
| Donostia to Karkkila | 1,609.85 mi (2,590.80 km) |
| Donostia to Kauhajoki | 1,640.20 mi (2,639.65 km) |
| Donostia to Kauhava | 1,691.98 mi (2,722.98 km) |
| Donostia to Kauniainen | 1,611.75 mi (2,593.86 km) |
| Donostia to Kemi | 1,848.72 mi (2,975.22 km) |
| Donostia to Kemijarvi | 1,953.41 mi (3,143.71 km) |
| Donostia to Kempele | 1,830.40 mi (2,945.74 km) |
| Donostia to Kerava | 1,629.25 mi (2,622.02 km) |
| Donostia to Keuruu | 1,694.43 mi (2,726.92 km) |
| Donostia to Kiiminki | 1,846.29 mi (2,971.32 km) |
| Donostia to Kirkkonummi | 1,598.87 mi (2,573.13 km) |
| Donostia to Kitee | 1,833.27 mi (2,950.37 km) |
| Donostia to Kiuruvesi | 1,800.75 mi (2,898.03 km) |
| Donostia to Kivisto | 1,619.08 mi (2,605.66 km) |
