| Castelo Branco to Jozefow | 1,605.03 mi (2,583.05 km) |
| Castelo Branco to Kalisz | 1,470.93 mi (2,367.24 km) |
| Castelo Branco to Kamien Pomorski | 1,424.70 mi (2,292.84 km) |
| Castelo Branco to Kamienna Gora | 1,362.59 mi (2,192.87 km) |
| Castelo Branco to Karczew | 1,604.49 mi (2,582.17 km) |
| Castelo Branco to Kartuzy | 1,555.71 mi (2,503.67 km) |
| Castelo Branco to Katowice | 1,470.89 mi (2,367.16 km) |
| Castelo Branco to Kedzierzyn-Kozle | 1,438.93 mi (2,315.74 km) |
| Castelo Branco to Kepno | 1,454.04 mi (2,340.06 km) |
| Castelo Branco to Ketrzyn | 1,662.46 mi (2,675.48 km) |
| Castelo Branco to Kety | 1,471.21 mi (2,367.68 km) |
| Castelo Branco to Kielce | 1,551.58 mi (2,497.03 km) |
| Castelo Branco to Kielczow | 1,418.15 mi (2,282.30 km) |
| Castelo Branco to Klobuck | 1,482.82 mi (2,386.36 km) |
| Castelo Branco to Klodzko | 1,377.60 mi (2,217.03 km) |
