| Duncan to Willow Grove (Pennsylvania) | 1,306.90 mi (2,103.25 km) |
| Duncan to Willowbrook (California) | 1,159.28 mi (1,865.68 km) |
| Duncan to Willowick (Ohio) | 1,017.75 mi (1,637.91 km) |
| Duncan to Wilmette (Illinois) | 758.27 mi (1,220.32 km) |
| Duncan to Wilmington (Delaware) | 1,280.07 mi (2,060.07 km) |
| Duncan to Wilmington (North Carolina) | 1,140.88 mi (1,836.06 km) |
| Duncan to Wilmington (Ohio) | 847.62 mi (1,364.12 km) |
| Duncan to Wilmington Island (Georgia) | 993.27 mi (1,598.52 km) |
| Duncan to Wilson (North Carolina) | 1,130.72 mi (1,819.71 km) |
| Duncan to Wilsonville (Oregon) | 1,503.37 mi (2,419.44 km) |
| Duncan to Wilton Manors (Florida) | 1,205.44 mi (1,939.96 km) |
| Duncan to Wimauma (Florida) | 1,036.12 mi (1,667.47 km) |
| Duncan to Winchester (Kentucky) | 800.47 mi (1,288.23 km) |
| Duncan to Winchester (Nevada) | 975.26 mi (1,569.52 km) |
| Duncan to Winchester (Virginia) | 1,135.00 mi (1,826.60 km) |
