| Duzce to Castrovillari | 790.10 mi (1,271.54 km) |
| Duzce to Catania | 889.68 mi (1,431.80 km) |
| Duzce to Catanzaro | 782.62 mi (1,259.50 km) |
| Duzce to Cattolica | 962.30 mi (1,548.67 km) |
| Duzce to Cava de' Tirreni | 859.99 mi (1,384.02 km) |
| Duzce to Cavallino | 680.36 mi (1,094.93 km) |
| Duzce to Cavarzere | 1,006.01 mi (1,619.02 km) |
| Duzce to Cave | 946.20 mi (1,522.77 km) |
| Duzce to Cavriago | 1,076.30 mi (1,732.14 km) |
| Duzce to Cavriglia | 1,021.68 mi (1,644.24 km) |
| Duzce to Cazzago San Martino | 1,109.65 mi (1,785.81 km) |
| Duzce to Ceccano | 926.31 mi (1,490.75 km) |
| Duzce to Cecina | 1,069.44 mi (1,721.10 km) |
| Duzce to Cefalu | 933.44 mi (1,502.23 km) |
| Duzce to Ceglie Messapico | 714.35 mi (1,149.64 km) |
