| Duncan to Civril | 6,390.77 mi (10,284.96 km) |
| Duncan to Cizre | 6,849.28 mi (11,022.85 km) |
| Duncan to Cobanlar | 6,406.32 mi (10,309.98 km) |
| Duncan to Corlu | 6,174.98 mi (9,937.67 km) |
| Duncan to Corum | 6,445.53 mi (10,373.07 km) |
| Duncan to Cukurca | 6,895.62 mi (11,097.43 km) |
| Duncan to Cukurcayir | 6,567.13 mi (10,568.77 km) |
| Duncan to Cumayeri | 6,297.04 mi (10,134.11 km) |
| Duncan to Cumra | 6,535.18 mi (10,517.35 km) |
| Duncan to Cungus | 6,711.40 mi (10,800.95 km) |
| Duncan to Dargecit | 6,823.16 mi (10,980.81 km) |
| Duncan to Davutlar | 6,332.14 mi (10,190.59 km) |
| Duncan to Demirozu | 6,617.86 mi (10,650.42 km) |
| Duncan to Demre | 6,507.13 mi (10,472.21 km) |
| Duncan to Denizciler | 6,701.66 mi (10,785.28 km) |
