| Duncan to Cabestany | 5,135.14 mi (8,264.21 km) |
| Duncan to Cabries | 5,208.83 mi (8,382.80 km) |
| Duncan to Cachan | 4,887.20 mi (7,865.18 km) |
| Duncan to Caen | 4,767.64 mi (7,672.78 km) |
| Duncan to Cagnes-sur-Mer | 5,273.04 mi (8,486.13 km) |
| Duncan to Cahors | 5,006.47 mi (8,057.13 km) |
| Duncan to Calais | 4,793.66 mi (7,714.64 km) |
| Duncan to Caluire-et-Cuire | 5,096.92 mi (8,202.69 km) |
| Duncan to Cambrai | 4,872.84 mi (7,842.08 km) |
| Duncan to Canet-en-Roussillon | 5,136.95 mi (8,267.12 km) |
| Duncan to Cannes | 5,271.95 mi (8,484.38 km) |
| Duncan to Canteleu | 4,813.63 mi (7,746.78 km) |
| Duncan to Capbreton | 4,912.44 mi (7,905.81 km) |
| Duncan to Carcassonne | 5,090.17 mi (8,191.84 km) |
| Duncan to Carmaux | 5,051.15 mi (8,129.04 km) |
