| Duncan to Cavdir | 6,449.16 mi (10,378.92 km) |
| Duncan to Cay | 6,420.56 mi (10,332.90 km) |
| Duncan to Caybasi | 6,485.03 mi (10,436.64 km) |
| Duncan to Caycuma | 6,304.80 mi (10,146.60 km) |
| Duncan to Cayeli | 6,588.61 mi (10,603.35 km) |
| Duncan to Cayiralan | 6,535.90 mi (10,518.52 km) |
| Duncan to Cayirhan | 6,362.75 mi (10,239.86 km) |
| Duncan to Cayirli | 6,642.68 mi (10,690.36 km) |
| Duncan to Cayirova | 6,246.10 mi (10,052.13 km) |
| Duncan to Caykara | 6,594.47 mi (10,612.77 km) |
| Duncan to Cekerek | 6,488.65 mi (10,442.47 km) |
| Duncan to Cekme | 6,228.42 mi (10,023.67 km) |
| Duncan to Celtik | 6,423.81 mi (10,338.12 km) |
| Duncan to Cerkes | 6,364.39 mi (10,242.50 km) |
| Duncan to Cerkezkoy | 6,175.07 mi (9,937.82 km) |
