| Seclin to Huelva | 1,042.39 mi (1,677.57 km) |
| Seclin to Huercal de Almeria | 982.09 mi (1,580.53 km) |
| Seclin to Huercal-Overa | 941.95 mi (1,515.92 km) |
| Seclin to Huesca | 604.03 mi (972.10 km) |
| Seclin to Huetor Vega | 981.37 mi (1,579.36 km) |
| Seclin to Huetor-Tajar | 986.55 mi (1,587.70 km) |
| Seclin to Humanes de Madrid | 784.40 mi (1,262.38 km) |
| Seclin to Ibi | 842.28 mi (1,355.52 km) |
| Seclin to Ibiza | 807.96 mi (1,300.29 km) |
| Seclin to Icod de los Vinos | 1,847.58 mi (2,973.40 km) |
| Seclin to Igualada | 623.19 mi (1,002.93 km) |
| Seclin to Illescas | 793.27 mi (1,276.65 km) |
| Seclin to Inca | 748.41 mi (1,204.45 km) |
| Seclin to Ingenio | 1,838.06 mi (2,958.07 km) |
| Seclin to Irun | 547.30 mi (880.80 km) |
