| Seclin to Cognac | 369.23 mi (594.23 km) |
| Seclin to Cogolin | 530.33 mi (853.48 km) |
| Seclin to Colmar | 258.80 mi (416.49 km) |
| Seclin to Colombes | 117.50 mi (189.09 km) |
| Seclin to Colomiers | 485.66 mi (781.59 km) |
| Seclin to Combs-la-Ville | 131.47 mi (211.58 km) |
| Seclin to Comines | 14.73 mi (23.71 km) |
| Seclin to Compiegne | 78.84 mi (126.89 km) |
| Seclin to Concarneau | 363.74 mi (585.38 km) |
| Seclin to Conde-sur-l'Escaut | 25.60 mi (41.20 km) |
| Seclin to Conflans-Sainte-Honorine | 114.81 mi (184.77 km) |
| Seclin to Corbas | 348.05 mi (560.13 km) |
| Seclin to Corbeil-Essonnes | 135.88 mi (218.68 km) |
| Seclin to Cormeilles-en-Parisis | 114.88 mi (184.89 km) |
| Seclin to Cosne sur Loire | 216.87 mi (349.01 km) |
