| Piraeus to Kalisz | 991.94 mi (1,596.37 km) |
| Piraeus to Kamien Pomorski | 1,184.38 mi (1,906.07 km) |
| Piraeus to Kamienna Gora | 962.35 mi (1,548.76 km) |
| Piraeus to Karczew | 983.85 mi (1,583.35 km) |
| Piraeus to Kartuzy | 1,161.23 mi (1,868.82 km) |
| Piraeus to Katowice | 881.48 mi (1,418.60 km) |
| Piraeus to Kedzierzyn-Kozle | 898.15 mi (1,445.43 km) |
| Piraeus to Kepno | 962.17 mi (1,548.46 km) |
| Piraeus to Ketrzyn | 1,120.32 mi (1,802.97 km) |
| Piraeus to Kety | 854.66 mi (1,375.45 km) |
| Piraeus to Kielce | 905.55 mi (1,457.35 km) |
| Piraeus to Kielczow | 964.97 mi (1,552.96 km) |
| Piraeus to Klobuck | 925.58 mi (1,489.58 km) |
| Piraeus to Klodzko | 928.99 mi (1,495.07 km) |
| Piraeus to Kluczbork | 939.29 mi (1,511.64 km) |
