| Donostia to Kluczbork | 1,081.62 mi (1,740.69 km) |
| Donostia to Knurow | 1,082.94 mi (1,742.83 km) |
| Donostia to Kobylka | 1,234.60 mi (1,986.89 km) |
| Donostia to Kokoszki | 1,195.63 mi (1,924.18 km) |
| Donostia to Kolbuszowa | 1,214.52 mi (1,954.58 km) |
| Donostia to Kolno | 1,290.88 mi (2,077.48 km) |
| Donostia to Kolo | 1,131.00 mi (1,820.17 km) |
| Donostia to Kolobrzeg | 1,090.93 mi (1,755.68 km) |
| Donostia to Koluszki | 1,164.54 mi (1,874.15 km) |
| Donostia to Komorniki | 1,059.80 mi (1,705.58 km) |
| Donostia to Konin | 1,117.42 mi (1,798.31 km) |
| Donostia to Konskie | 1,176.41 mi (1,893.25 km) |
| Donostia to Konstancin-Jeziorna | 1,225.18 mi (1,971.74 km) |
| Donostia to Konstantynow Lodzki | 1,146.00 mi (1,844.32 km) |
| Donostia to Koronowo | 1,139.88 mi (1,834.46 km) |
