| Duncan to Austin (Minnesota) | 683.98 mi (1,100.76 km) |
| Duncan to Austin (Texas) | 293.14 mi (471.77 km) |
| Duncan to Austintown (Ohio) | 1,038.84 mi (1,671.86 km) |
| Duncan to Avenal (California) | 1,253.28 mi (2,016.96 km) |
| Duncan to Avenel (New Jersey) | 1,356.06 mi (2,182.36 km) |
| Duncan to Aventura (Florida) | 1,213.24 mi (1,952.51 km) |
| Duncan to Avocado Heights (California) | 1,144.64 mi (1,842.13 km) |
| Duncan to Avon (Indiana) | 729.36 mi (1,173.79 km) |
| Duncan to Avon (Ohio) | 986.50 mi (1,587.62 km) |
| Duncan to Avon Lake (Ohio) | 987.92 mi (1,589.90 km) |
| Duncan to Avondale (Arizona) | 828.44 mi (1,333.24 km) |
| Duncan to Azalea Park (Florida) | 1,061.23 mi (1,707.89 km) |
| Duncan to Azle (Texas) | 115.80 mi (186.36 km) |
| Duncan to Azusa (California) | 1,138.98 mi (1,833.01 km) |
| Duncan to Bacliff (Texas) | 387.77 mi (624.05 km) |
