| Seclin to Castelfiorentino | 607.53 mi (977.73 km) |
| Seclin to Castelfranco di Sopra | 623.60 mi (1,003.59 km) |
| Seclin to Castelfranco di Sotto | 595.67 mi (958.64 km) |
| Seclin to Castelfranco Emilia | 555.23 mi (893.55 km) |
| Seclin to Castelfranco Veneto | 530.89 mi (854.38 km) |
| Seclin to Castellabate | 913.03 mi (1,469.38 km) |
| Seclin to Castellammare del Golfo | 990.96 mi (1,594.80 km) |
| Seclin to Castellammare di Stabia | 875.25 mi (1,408.58 km) |
| Seclin to Castellamonte | 417.36 mi (671.67 km) |
| Seclin to Castellana Grotte | 951.46 mi (1,531.23 km) |
| Seclin to Castellaneta | 956.79 mi (1,539.80 km) |
| Seclin to Castellanza | 435.07 mi (700.17 km) |
| Seclin to Castellarano | 548.52 mi (882.75 km) |
| Seclin to Castelleone | 477.99 mi (769.25 km) |
| Seclin to Castelletto sopra Ticino | 421.91 mi (678.99 km) |
