| Seclin to Knurow | 688.78 mi (1,108.48 km) |
| Seclin to Kobylka | 790.05 mi (1,271.47 km) |
| Seclin to Kokoszki | 700.35 mi (1,127.10 km) |
| Seclin to Kolbuszowa | 823.30 mi (1,324.97 km) |
| Seclin to Kolno | 825.79 mi (1,328.99 km) |
| Seclin to Kolo | 681.22 mi (1,096.32 km) |
| Seclin to Kolobrzeg | 584.64 mi (940.89 km) |
| Seclin to Koluszki | 729.95 mi (1,174.75 km) |
| Seclin to Komorniki | 600.07 mi (965.72 km) |
| Seclin to Konin | 665.81 mi (1,071.51 km) |
| Seclin to Konskie | 757.64 mi (1,219.31 km) |
| Seclin to Konstancin-Jeziorna | 786.18 mi (1,265.23 km) |
| Seclin to Konstantynow Lodzki | 709.99 mi (1,142.62 km) |
| Seclin to Koronowo | 661.71 mi (1,064.92 km) |
| Seclin to Koscian | 596.76 mi (960.40 km) |
