| Seia to Cognac | 520.46 mi (837.60 km) |
| Seia to Cogolin | 757.24 mi (1,218.66 km) |
| Seia to Colmar | 911.43 mi (1,466.80 km) |
| Seia to Colombes | 763.05 mi (1,228.02 km) |
| Seia to Colomiers | 513.36 mi (826.17 km) |
| Seia to Combs-la-Ville | 760.31 mi (1,223.60 km) |
| Seia to Comines | 880.37 mi (1,416.82 km) |
| Seia to Compiegne | 805.43 mi (1,296.22 km) |
| Seia to Concarneau | 547.89 mi (881.75 km) |
| Seia to Conde-sur-l'Escaut | 880.99 mi (1,417.81 km) |
| Seia to Conflans-Sainte-Honorine | 762.11 mi (1,226.50 km) |
| Seia to Corbas | 731.21 mi (1,176.77 km) |
| Seia to Corbeil-Essonnes | 755.05 mi (1,215.14 km) |
| Seia to Cormeilles-en-Parisis | 764.01 mi (1,229.55 km) |
| Seia to Cosne sur Loire | 715.00 mi (1,150.68 km) |
