| Harwich to Kluczbork | 731.01 mi (1,176.45 km) |
| Harwich to Knurow | 763.46 mi (1,228.66 km) |
| Harwich to Kobylka | 843.19 mi (1,356.99 km) |
| Harwich to Kokoszki | 731.18 mi (1,176.72 km) |
| Harwich to Kolbuszowa | 894.18 mi (1,439.04 km) |
| Harwich to Kolno | 868.79 mi (1,398.19 km) |
| Harwich to Kolo | 736.13 mi (1,184.69 km) |
| Harwich to Kolobrzeg | 612.95 mi (986.44 km) |
| Harwich to Koluszki | 789.14 mi (1,270.00 km) |
| Harwich to Komorniki | 654.22 mi (1,052.87 km) |
| Harwich to Konin | 720.57 mi (1,159.64 km) |
| Harwich to Konskie | 821.67 mi (1,322.35 km) |
| Harwich to Konstancin-Jeziorna | 841.68 mi (1,354.55 km) |
| Harwich to Konstantynow Lodzki | 769.38 mi (1,238.20 km) |
| Harwich to Koronowo | 703.90 mi (1,132.81 km) |
