| Duncan to Cuenca | 5,005.68 mi (8,055.87 km) |
| Duncan to Cuevas del Almanzora | 5,117.69 mi (8,236.12 km) |
| Duncan to Cullera | 5,124.42 mi (8,246.96 km) |
| Duncan to Culleredo | 4,616.62 mi (7,429.73 km) |
| Duncan to Cunit | 5,133.80 mi (8,262.05 km) |
| Duncan to Daganzo de Arriba | 4,929.60 mi (7,933.43 km) |
| Duncan to Daimiel | 4,972.85 mi (8,003.03 km) |
| Duncan to Don Benito | 4,872.59 mi (7,841.68 km) |
| Duncan to Donostia | 4,899.78 mi (7,885.43 km) |
| Duncan to Dos Hermanas | 4,926.42 mi (7,928.30 km) |
| Duncan to Durango | 4,876.55 mi (7,848.05 km) |
| Duncan to Ecija | 4,957.79 mi (7,978.79 km) |
| Duncan to Ejea de los Caballeros | 4,978.22 mi (8,011.68 km) |
| Duncan to El Alamo | 4,915.82 mi (7,911.25 km) |
| Duncan to El Arahal | 4,944.77 mi (7,957.83 km) |
