| Duzce to Coudekerque-Branche | 1,537.52 mi (2,474.39 km) |
| Duzce to Coueron | 1,678.06 mi (2,700.57 km) |
| Duzce to Coulommiers | 1,471.42 mi (2,368.02 km) |
| Duzce to Courbevoic | 1,509.56 mi (2,429.41 km) |
| Duzce to Courcouronnes | 1,498.23 mi (2,411.17 km) |
| Duzce to Cournon-d'Auvergne | 1,438.40 mi (2,314.87 km) |
| Duzce to Courrieres | 1,503.56 mi (2,419.75 km) |
| Duzce to Coutras | 1,598.52 mi (2,572.56 km) |
| Duzce to Couzeix | 1,533.07 mi (2,467.24 km) |
| Duzce to Cran-Gevrier | 1,299.98 mi (2,092.12 km) |
| Duzce to Craponne | 1,365.03 mi (2,196.80 km) |
| Duzce to Creil | 1,504.21 mi (2,420.80 km) |
| Duzce to Crepy-en-Valois | 1,486.04 mi (2,391.55 km) |
| Duzce to Crest | 1,346.10 mi (2,166.35 km) |
| Duzce to Creteil | 1,498.83 mi (2,412.13 km) |
