| Duncan to Westland (Michigan) | 950.91 mi (1,530.34 km) |
| Duncan to Westminster (California) | 1,147.18 mi (1,846.21 km) |
| Duncan to Westminster (Colorado) | 538.79 mi (867.10 km) |
| Duncan to Westminster (Maryland) | 1,201.37 mi (1,933.42 km) |
| Duncan to Westmont (California) | 1,162.84 mi (1,871.41 km) |
| Duncan to Westmont (Illinois) | 736.06 mi (1,184.58 km) |
| Duncan to Westmont (New Jersey) | 1,307.39 mi (2,104.05 km) |
| Duncan to Weston (Florida) | 1,193.85 mi (1,921.32 km) |
| Duncan to Weston (Wisconsin) | 841.19 mi (1,353.76 km) |
| Duncan to Westphalia (Maryland) | 1,202.68 mi (1,935.53 km) |
| Duncan to Westview (Florida) | 1,210.67 mi (1,948.39 km) |
| Duncan to Westwood (New Jersey) | 1,373.64 mi (2,210.66 km) |
| Duncan to Westwood Lakes (Florida) | 1,210.12 mi (1,947.49 km) |
| Duncan to Wheat Ridge (Colorado) | 535.43 mi (861.70 km) |
| Duncan to Wheaton (Illinois) | 733.49 mi (1,180.44 km) |
