| Seclin to Civita Castellana | 723.18 mi (1,163.85 km) |
| Seclin to Civitanova Marche | 709.95 mi (1,142.56 km) |
| Seclin to Civitavecchia | 717.16 mi (1,154.15 km) |
| Seclin to Civitella in Val di Chiana | 639.80 mi (1,029.66 km) |
| Seclin to Clusone | 452.85 mi (728.79 km) |
| Seclin to Coccaglio | 470.37 mi (756.98 km) |
| Seclin to Codigoro | 577.63 mi (929.61 km) |
| Seclin to Codogno | 483.74 mi (778.51 km) |
| Seclin to Codroipo | 555.95 mi (894.71 km) |
| Seclin to Cogoleto | 499.57 mi (803.98 km) |
| Seclin to Colle di Val d'Elsa | 623.64 mi (1,003.65 km) |
| Seclin to Colle Salvetti | 593.92 mi (955.82 km) |
| Seclin to Collecchio | 521.44 mi (839.17 km) |
| Seclin to Colleferro | 772.88 mi (1,243.83 km) |
| Seclin to Collegno | 432.60 mi (696.21 km) |
