| Duncan to Alachua (Florida) | 959.85 mi (1,544.73 km) |
| Duncan to Alafaya (Florida) | 1,067.72 mi (1,718.32 km) |
| Duncan to Alameda (California) | 1,372.36 mi (2,208.59 km) |
| Duncan to Alamo (California) | 1,358.76 mi (2,186.71 km) |
| Duncan to Alamo (Texas) | 577.72 mi (929.76 km) |
| Duncan to Alamogordo (New Mexico) | 475.97 mi (766.00 km) |
| Duncan to Albany (California) | 1,374.56 mi (2,212.14 km) |
| Duncan to Albany (Georgia) | 821.12 mi (1,321.46 km) |
| Duncan to Albany (New York) | 1,411.95 mi (2,272.31 km) |
| Duncan to Albany (Oregon) | 1,502.24 mi (2,417.63 km) |
| Duncan to Albemarle (North Carolina) | 1,004.34 mi (1,616.33 km) |
| Duncan to Albert Lea (Minnesota) | 675.18 mi (1,086.60 km) |
| Duncan to Albertville (Alabama) | 667.51 mi (1,074.25 km) |
| Duncan to Albuquerque (New Mexico) | 496.26 mi (798.65 km) |
| Duncan to Alcoa (Tennessee) | 791.81 mi (1,274.29 km) |
