| Donostia to Isparta | 1,739.23 mi (2,799.02 km) |
| Donostia to Istanbul | 1,583.10 mi (2,547.75 km) |
| Donostia to Izmir | 1,550.26 mi (2,494.91 km) |
| Donostia to Kadinhani | 1,809.79 mi (2,912.57 km) |
| Donostia to Kadirli | 2,028.69 mi (3,264.85 km) |
| Donostia to Kagithane | 1,582.56 mi (2,546.88 km) |
| Donostia to Kahramanmaras | 2,064.64 mi (3,322.71 km) |
| Donostia to Kahta | 2,143.98 mi (3,450.41 km) |
| Donostia to Kaman | 1,857.90 mi (2,990.01 km) |
| Donostia to Kangal | 2,044.38 mi (3,290.12 km) |
| Donostia to Kapakli | 1,527.64 mi (2,458.51 km) |
| Donostia to Karaagac | 2,053.30 mi (3,304.46 km) |
| Donostia to Karaagac | 1,527.41 mi (2,458.14 km) |
| Donostia to Karabuk | 1,763.02 mi (2,837.30 km) |
| Donostia to Karahalli | 1,672.34 mi (2,691.37 km) |
