| Donostia to Jozefow | 1,231.02 mi (1,981.14 km) |
| Donostia to Kalisz | 1,096.92 mi (1,765.32 km) |
| Donostia to Kamien Pomorski | 1,056.31 mi (1,699.96 km) |
| Donostia to Kamienna Gora | 988.58 mi (1,590.96 km) |
| Donostia to Karczew | 1,230.49 mi (1,980.28 km) |
| Donostia to Kartuzy | 1,184.86 mi (1,906.85 km) |
| Donostia to Katowice | 1,098.02 mi (1,767.09 km) |
| Donostia to Kedzierzyn-Kozle | 1,065.69 mi (1,715.06 km) |
| Donostia to Kepno | 1,080.04 mi (1,738.16 km) |
| Donostia to Ketrzyn | 1,289.51 mi (2,075.27 km) |
| Donostia to Kety | 1,099.06 mi (1,768.77 km) |
| Donostia to Kielce | 1,178.35 mi (1,896.37 km) |
| Donostia to Kielczow | 1,044.14 mi (1,680.38 km) |
| Donostia to Klobuck | 1,109.15 mi (1,785.01 km) |
| Donostia to Klodzko | 1,003.86 mi (1,615.56 km) |
