| Donostia to Kamen | 726.51 mi (1,169.20 km) |
| Donostia to Kamenz | 929.07 mi (1,495.19 km) |
| Donostia to Kamp-Lintfort | 690.30 mi (1,110.92 km) |
| Donostia to Kandel | 628.00 mi (1,010.67 km) |
| Donostia to Kappeln | 948.86 mi (1,527.05 km) |
| Donostia to Karben | 696.39 mi (1,120.74 km) |
| Donostia to Karlsdorf-Neuthard | 642.83 mi (1,034.54 km) |
| Donostia to Karlsfeld | 729.68 mi (1,174.30 km) |
| Donostia to Karlsruhe | 632.63 mi (1,018.12 km) |
| Donostia to Kassel | 769.16 mi (1,237.84 km) |
| Donostia to Kaufbeuren | 684.73 mi (1,101.97 km) |
| Donostia to Kaufering | 701.32 mi (1,128.66 km) |
| Donostia to Kaufungen | 771.50 mi (1,241.62 km) |
| Donostia to Kehl | 593.32 mi (954.86 km) |
| Donostia to Kelheim | 765.98 mi (1,232.72 km) |
