| Seclin to Cologno al Serio | 460.66 mi (741.36 km) |
| Seclin to Cologno Monzese | 450.92 mi (725.69 km) |
| Seclin to Colorno | 516.47 mi (831.18 km) |
| Seclin to Comacchio | 586.56 mi (943.98 km) |
| Seclin to Comiso | 1,099.92 mi (1,770.16 km) |
| Seclin to Como | 429.86 mi (691.79 km) |
| Seclin to Concordia Sagittaria | 559.64 mi (900.65 km) |
| Seclin to Concorezzo | 449.29 mi (723.07 km) |
| Seclin to Conegliano | 533.93 mi (859.28 km) |
| Seclin to Conselice | 584.34 mi (940.41 km) |
| Seclin to Conselve | 549.32 mi (884.04 km) |
| Seclin to Conversano | 945.39 mi (1,521.47 km) |
| Seclin to Copertino | 1,013.98 mi (1,631.84 km) |
| Seclin to Copparo | 564.74 mi (908.87 km) |
| Seclin to Corato | 911.53 mi (1,466.96 km) |
