| Seclin to Kalisz | 656.40 mi (1,056.37 km) |
| Seclin to Kamien Pomorski | 549.14 mi (883.76 km) |
| Seclin to Kamienna Gora | 568.99 mi (915.71 km) |
| Seclin to Karczew | 791.83 mi (1,274.33 km) |
| Seclin to Kartuzy | 688.66 mi (1,108.29 km) |
| Seclin to Katowice | 702.90 mi (1,131.21 km) |
| Seclin to Kedzierzyn-Kozle | 666.42 mi (1,072.51 km) |
| Seclin to Kepno | 652.24 mi (1,049.68 km) |
| Seclin to Ketrzyn | 810.09 mi (1,303.72 km) |
| Seclin to Kety | 715.53 mi (1,151.54 km) |
| Seclin to Kielce | 768.71 mi (1,237.12 km) |
| Seclin to Kielczow | 617.68 mi (994.06 km) |
| Seclin to Klobuck | 694.63 mi (1,117.90 km) |
| Seclin to Klodzko | 597.94 mi (962.29 km) |
| Seclin to Kluczbork | 663.20 mi (1,067.32 km) |
