| Seia to Coudekerque-Branche | 877.87 mi (1,412.80 km) |
| Seia to Coueron | 555.66 mi (894.26 km) |
| Seia to Coulommiers | 784.43 mi (1,262.42 km) |
| Seia to Courbevoic | 761.79 mi (1,225.98 km) |
| Seia to Courcouronnes | 753.84 mi (1,213.18 km) |
| Seia to Cournon-d'Auvergne | 660.64 mi (1,063.20 km) |
| Seia to Courrieres | 862.68 mi (1,388.34 km) |
| Seia to Coutras | 499.20 mi (803.38 km) |
| Seia to Couzeix | 586.85 mi (944.45 km) |
| Seia to Cran-Gevrier | 790.66 mi (1,272.45 km) |
| Seia to Craponne | 725.75 mi (1,167.98 km) |
| Seia to Creil | 787.07 mi (1,266.67 km) |
| Seia to Crepy-en-Valois | 798.46 mi (1,284.99 km) |
| Seia to Crest | 711.48 mi (1,145.01 km) |
| Seia to Creteil | 763.11 mi (1,228.11 km) |
