| Donostia to Krosno Odrzanskie | 992.79 mi (1,597.74 km) |
| Donostia to Krotoszyn | 1,069.62 mi (1,721.39 km) |
| Donostia to Kruszwica | 1,133.72 mi (1,824.55 km) |
| Donostia to Krynica | 1,166.03 mi (1,876.55 km) |
| Donostia to Krzeszowice | 1,121.36 mi (1,804.65 km) |
| Donostia to Kudowa-Zdroj | 987.30 mi (1,588.90 km) |
| Donostia to Kutno | 1,160.28 mi (1,867.29 km) |
| Donostia to Kwidzyn | 1,189.75 mi (1,914.71 km) |
| Donostia to Lancut | 1,231.65 mi (1,982.16 km) |
| Donostia to Lapy | 1,316.48 mi (2,118.66 km) |
| Donostia to Lask | 1,133.92 mi (1,824.87 km) |
| Donostia to Laziska Gorne | 1,088.54 mi (1,751.84 km) |
| Donostia to Lebork | 1,177.61 mi (1,895.17 km) |
| Donostia to Leczna | 1,280.33 mi (2,060.49 km) |
| Donostia to Leczyca | 1,148.76 mi (1,848.75 km) |
