| Duncan to West Memphis (Arkansas) | 439.79 mi (707.77 km) |
| Duncan to West Mifflin (Pennsylvania) | 1,064.25 mi (1,712.75 km) |
| Duncan to West Monroe (Louisiana) | 360.63 mi (580.38 km) |
| Duncan to West New York (New Jersey) | 1,372.10 mi (2,208.18 km) |
| Duncan to West Odessa (Texas) | 323.89 mi (521.25 km) |
| Duncan to West Palm Beach (Florida) | 1,184.22 mi (1,905.82 km) |
| Duncan to West Park (Florida) | 1,209.33 mi (1,946.23 km) |
| Duncan to West Pensacola (Florida) | 682.41 mi (1,098.23 km) |
| Duncan to West Plains (Missouri) | 372.17 mi (598.95 km) |
| Duncan to West Point (Utah) | 895.76 mi (1,441.59 km) |
| Duncan to West Puente Valley (California) | 1,142.90 mi (1,839.31 km) |
| Duncan to West Rancho Dominguez (California) | 1,161.28 mi (1,868.90 km) |
| Duncan to West Richland (Washington) | 1,384.56 mi (2,228.23 km) |
| Duncan to West Sacramento (California) | 1,336.62 mi (2,151.09 km) |
| Duncan to West Springfield (Virginia) | 1,180.95 mi (1,900.56 km) |
