| Seclin to Castelli Calepio | 464.23 mi (747.10 km) |
| Seclin to Castelnovo ne' Monti | 544.35 mi (876.05 km) |
| Seclin to Castelnuovo Berardenga | 637.37 mi (1,025.75 km) |
| Seclin to Castelnuovo di Porto | 735.05 mi (1,182.95 km) |
| Seclin to Castelnuovo di Verona | 502.39 mi (808.52 km) |
| Seclin to Castelnuovo Rangone | 554.02 mi (891.61 km) |
| Seclin to Castelvetrano | 1,010.26 mi (1,625.86 km) |
| Seclin to Castelvetro di Modena | 557.23 mi (896.78 km) |
| Seclin to Castenaso | 573.02 mi (922.19 km) |
| Seclin to Castenedolo | 485.29 mi (781.00 km) |
| Seclin to Castiglion Fiorentino | 649.91 mi (1,045.93 km) |
| Seclin to Castiglione del Lago | 665.16 mi (1,070.47 km) |
| Seclin to Castiglione delle Stiviere | 495.45 mi (797.35 km) |
| Seclin to Castrolibero | 1,005.50 mi (1,618.19 km) |
| Seclin to Castrovillari | 977.46 mi (1,573.07 km) |
