| Seclin to Imielin | 712.96 mi (1,147.41 km) |
| Seclin to Inowroclaw | 669.47 mi (1,077.41 km) |
| Seclin to Janow Lubelski | 847.30 mi (1,363.60 km) |
| Seclin to Jarocin | 632.25 mi (1,017.50 km) |
| Seclin to Jaroslaw | 865.79 mi (1,393.36 km) |
| Seclin to Jasien | 702.74 mi (1,130.95 km) |
| Seclin to Jaslo | 816.28 mi (1,313.68 km) |
| Seclin to Jastrzebie-Zdroj | 687.18 mi (1,105.90 km) |
| Seclin to Jawor | 575.43 mi (926.07 km) |
| Seclin to Jaworzno | 714.59 mi (1,150.01 km) |
| Seclin to Jedrzejow | 755.87 mi (1,216.45 km) |
| Seclin to Jelcz-Laskowice | 624.67 mi (1,005.31 km) |
| Seclin to Jelenia Gora | 555.55 mi (894.07 km) |
| Seclin to Jozefoslaw | 783.20 mi (1,260.44 km) |
| Seclin to Jozefow | 791.16 mi (1,273.25 km) |
