| Duncan to Carpentras | 5,171.44 mi (8,322.62 km) |
| Duncan to Carquefou | 4,785.43 mi (7,701.41 km) |
| Duncan to Carqueiranne | 5,251.14 mi (8,450.90 km) |
| Duncan to Carrieres-sous-Poissy | 4,870.24 mi (7,837.89 km) |
| Duncan to Carrieres-sur-Seine | 4,881.31 mi (7,855.71 km) |
| Duncan to Carros | 5,270.56 mi (8,482.15 km) |
| Duncan to Carvin | 4,851.12 mi (7,807.13 km) |
| Duncan to Castanet-Tolosan | 5,042.70 mi (8,115.45 km) |
| Duncan to Castelginest | 5,033.45 mi (8,100.56 km) |
| Duncan to Castelnau-le-Lez | 5,139.70 mi (8,271.55 km) |
| Duncan to Castelnaudary | 5,069.33 mi (8,158.31 km) |
| Duncan to Castelsarrasin | 5,007.09 mi (8,058.13 km) |
| Duncan to Castres | 5,071.53 mi (8,161.85 km) |
| Duncan to Caudebec-les-Elbeuf | 4,818.89 mi (7,755.26 km) |
| Duncan to Caudry | 4,881.36 mi (7,855.80 km) |
