| Duncan to West Falls Church (Virginia) | 1,183.88 mi (1,905.27 km) |
| Duncan to West Fargo (North Dakota) | 852.63 mi (1,372.17 km) |
| Duncan to West Freehold (New Jersey) | 1,350.72 mi (2,173.77 km) |
| Duncan to West Haven (Connecticut) | 1,431.75 mi (2,304.18 km) |
| Duncan to West Haven (Utah) | 896.27 mi (1,442.41 km) |
| Duncan to West Haverstraw (New York) | 1,378.80 mi (2,218.97 km) |
| Duncan to West Hempstead (New York) | 1,389.46 mi (2,236.12 km) |
| Duncan to West Hollywood (California) | 1,165.49 mi (1,875.67 km) |
| Duncan to West Islip (New York) | 1,407.89 mi (2,265.79 km) |
| Duncan to West Jordan (Utah) | 875.91 mi (1,409.65 km) |
| Duncan to West Lafayette (Indiana) | 726.99 mi (1,169.97 km) |
| Duncan to West Lealman (Florida) | 1,008.96 mi (1,623.76 km) |
| Duncan to West Linn (Oregon) | 1,498.86 mi (2,412.18 km) |
| Duncan to West Little River (Florida) | 1,211.90 mi (1,950.36 km) |
| Duncan to West Melbourne (Florida) | 1,110.06 mi (1,786.47 km) |
