| Duncan to West St. Paul (Minnesota) | 760.23 mi (1,223.47 km) |
| Duncan to West University Place (Texas) | 363.78 mi (585.44 km) |
| Duncan to West Valley City (Utah) | 878.91 mi (1,414.47 km) |
| Duncan to West Whittier-Los Nietos (California) | 1,149.30 mi (1,849.62 km) |
| Duncan to Westbrook (Maine) | 1,597.84 mi (2,571.47 km) |
| Duncan to Westbury (New York) | 1,393.41 mi (2,242.47 km) |
| Duncan to Westchase (Florida) | 1,007.17 mi (1,620.88 km) |
| Duncan to Westchester (Florida) | 1,210.20 mi (1,947.63 km) |
| Duncan to Westchester (Illinois) | 741.78 mi (1,193.77 km) |
| Duncan to Western Springs (Illinois) | 739.32 mi (1,189.81 km) |
| Duncan to Westerville (Ohio) | 908.32 mi (1,461.80 km) |
| Duncan to Westfield (Indiana) | 749.11 mi (1,205.57 km) |
| Duncan to Westfield (Massachusetts) | 1,454.65 mi (2,341.04 km) |
| Duncan to Westfield (New Jersey) | 1,353.21 mi (2,177.78 km) |
| Duncan to Westlake (Ohio) | 990.85 mi (1,594.61 km) |
