| Duzce to Cividale del Friuli | 957.54 mi (1,541.01 km) |
| Duzce to Civita Castellana | 972.36 mi (1,564.86 km) |
| Duzce to Civitanova Marche | 907.95 mi (1,461.21 km) |
| Duzce to Civitavecchia | 1,003.80 mi (1,615.46 km) |
| Duzce to Civitella in Val di Chiana | 1,009.57 mi (1,624.75 km) |
| Duzce to Clusone | 1,116.90 mi (1,797.48 km) |
| Duzce to Coccaglio | 1,111.70 mi (1,789.11 km) |
| Duzce to Codigoro | 1,000.73 mi (1,610.53 km) |
| Duzce to Codogno | 1,120.61 mi (1,803.45 km) |
| Duzce to Codroipo | 976.03 mi (1,570.78 km) |
| Duzce to Cogoleto | 1,166.66 mi (1,877.56 km) |
| Duzce to Colle di Val d'Elsa | 1,038.75 mi (1,671.70 km) |
| Duzce to Colle Salvetti | 1,072.01 mi (1,725.23 km) |
| Duzce to Collecchio | 1,092.15 mi (1,757.65 km) |
| Duzce to Colleferro | 942.13 mi (1,516.20 km) |
