| Seclin to Hazebrouck | 24.71 mi (39.76 km) |
| Seclin to Hellemmes-Lille | 6.56 mi (10.56 km) |
| Seclin to Hem | 10.14 mi (16.33 km) |
| Seclin to Hendaye | 545.70 mi (878.21 km) |
| Seclin to Henin-Beaumont | 9.40 mi (15.14 km) |
| Seclin to Hennebont | 342.07 mi (550.51 km) |
| Seclin to Hericourt | 265.79 mi (427.75 km) |
| Seclin to Herouville-Saint-Clair | 175.86 mi (283.01 km) |
| Seclin to Hirson | 63.61 mi (102.37 km) |
| Seclin to Hoenheim | 249.88 mi (402.14 km) |
| Seclin to Houilles | 118.19 mi (190.21 km) |
| Seclin to Hyeres | 533.66 mi (858.84 km) |
| Seclin to Ifs | 179.43 mi (288.77 km) |
| Seclin to Igny | 129.86 mi (208.99 km) |
| Seclin to Illkirch-Graffenstaden | 252.27 mi (405.99 km) |
