| Duncan to Waimea (Hawaii) | 3,634.04 mi (5,848.42 km) |
| Duncan to Waipahu (Hawaii) | 3,723.97 mi (5,993.16 km) |
| Duncan to Waipio (Hawaii) | 3,722.29 mi (5,990.45 km) |
| Duncan to Wake Forest (North Carolina) | 1,097.61 mi (1,766.44 km) |
| Duncan to Wakefield (Virginia) | 1,180.66 mi (1,900.09 km) |
| Duncan to Waldorf (Maryland) | 1,195.86 mi (1,924.56 km) |
| Duncan to Walker (Michigan) | 876.28 mi (1,410.24 km) |
| Duncan to Walker Mill (Maryland) | 1,200.09 mi (1,931.37 km) |
| Duncan to Walla Walla (Washington) | 1,331.88 mi (2,143.46 km) |
| Duncan to Wallingford Center (Connecticut) | 1,441.62 mi (2,320.06 km) |
| Duncan to Wallington (New Jersey) | 1,367.96 mi (2,201.52 km) |
| Duncan to Walnut (California) | 1,136.88 mi (1,829.63 km) |
| Duncan to Walnut Creek (California) | 1,360.33 mi (2,189.24 km) |
| Duncan to Walnut Park (California) | 1,158.06 mi (1,863.72 km) |
| Duncan to Waltham (Massachusetts) | 1,533.97 mi (2,468.69 km) |
