| Duncan to Arroyo Grande (California) | 1,283.16 mi (2,065.04 km) |
| Duncan to Artesia (California) | 1,150.98 mi (1,852.32 km) |
| Duncan to Artesia (New Mexico) | 391.70 mi (630.38 km) |
| Duncan to Artondale (Washington) | 1,552.17 mi (2,497.98 km) |
| Duncan to Arvada (Colorado) | 540.03 mi (869.09 km) |
| Duncan to Arvin (California) | 1,184.00 mi (1,905.47 km) |
| Duncan to Asbury Lake (Florida) | 990.92 mi (1,594.73 km) |
| Duncan to Asbury Park (New Jersey) | 1,365.31 mi (2,197.26 km) |
| Duncan to Ashburn (Virginia) | 1,170.49 mi (1,883.73 km) |
| Duncan to Asheboro (North Carolina) | 1,025.07 mi (1,649.69 km) |
| Duncan to Asheville (North Carolina) | 871.21 mi (1,402.08 km) |
| Duncan to Ashland (California) | 1,363.94 mi (2,195.05 km) |
| Duncan to Ashland (Kentucky) | 889.36 mi (1,431.29 km) |
| Duncan to Ashland (Ohio) | 956.59 mi (1,539.49 km) |
| Duncan to Ashland (Oregon) | 1,436.14 mi (2,311.24 km) |
