| Duncan to Celano | 5,597.54 mi (9,008.37 km) |
| Duncan to Cento | 5,394.72 mi (8,681.96 km) |
| Duncan to Cepagatti | 5,605.47 mi (9,021.14 km) |
| Duncan to Ceprano | 5,619.30 mi (9,043.38 km) |
| Duncan to Cercola | 5,682.74 mi (9,145.48 km) |
| Duncan to Cerea | 5,372.60 mi (8,646.36 km) |
| Duncan to Cerese | 5,360.70 mi (8,627.21 km) |
| Duncan to Cerignola | 5,726.64 mi (9,216.13 km) |
| Duncan to Cermenate | 5,268.94 mi (8,479.54 km) |
| Duncan to Cernusco sul Naviglio | 5,286.15 mi (8,507.24 km) |
| Duncan to Cerreto Guidi | 5,419.45 mi (8,721.75 km) |
| Duncan to Cerro Maggiore | 5,267.76 mi (8,477.63 km) |
| Duncan to Certaldo | 5,434.89 mi (8,746.61 km) |
| Duncan to Cerveteri | 5,542.89 mi (8,920.41 km) |
| Duncan to Cervia | 5,456.60 mi (8,781.55 km) |
