| Seclin to Cassino | 810.39 mi (1,304.19 km) |
| Seclin to Castagneto Carducci | 622.24 mi (1,001.39 km) |
| Seclin to Castano Primo | 435.02 mi (700.11 km) |
| Seclin to Castel Bolognese | 593.71 mi (955.48 km) |
| Seclin to Castel Gandolfo | 761.53 mi (1,225.57 km) |
| Seclin to Castel Goffredo | 499.95 mi (804.60 km) |
| Seclin to Castel Maggiore | 566.71 mi (912.03 km) |
| Seclin to Castel Mella | 479.09 mi (771.03 km) |
| Seclin to Castel San Giorgio | 876.94 mi (1,411.29 km) |
| Seclin to Castel San Giovanni | 481.97 mi (775.65 km) |
| Seclin to Castel San Pietro Terme | 582.40 mi (937.28 km) |
| Seclin to Castel Volturno | 838.26 mi (1,349.04 km) |
| Seclin to Castelbuono | 1,027.07 mi (1,652.90 km) |
| Seclin to Casteldaccia | 1,005.49 mi (1,618.18 km) |
| Seclin to Castelfidardo | 695.22 mi (1,118.86 km) |
