| Seclin to Coudekerque-Branche | 43.15 mi (69.45 km) |
| Seclin to Coueron | 315.54 mi (507.81 km) |
| Seclin to Coulommiers | 119.74 mi (192.71 km) |
| Seclin to Courbevoic | 119.19 mi (191.82 km) |
| Seclin to Courcouronnes | 135.65 mi (218.31 km) |
| Seclin to Cournon-d'Auvergne | 332.16 mi (534.56 km) |
| Seclin to Courrieres | 7.20 mi (11.59 km) |
| Seclin to Coutras | 407.69 mi (656.12 km) |
| Seclin to Couzeix | 333.15 mi (536.16 km) |
| Seclin to Cran-Gevrier | 350.66 mi (564.33 km) |
| Seclin to Craponne | 340.89 mi (548.62 km) |
| Seclin to Creil | 92.38 mi (148.68 km) |
| Seclin to Crepy-en-Valois | 91.00 mi (146.45 km) |
| Seclin to Crest | 412.64 mi (664.09 km) |
| Seclin to Creteil | 124.03 mi (199.60 km) |
