| Duncan to Attleboro (Massachusetts) | 1,525.13 mi (2,454.46 km) |
| Duncan to Atwater (California) | 1,279.92 mi (2,059.84 km) |
| Duncan to Auburn (Alabama) | 727.46 mi (1,170.73 km) |
| Duncan to Auburn (California) | 1,313.43 mi (2,113.77 km) |
| Duncan to Auburn (Indiana) | 843.38 mi (1,357.29 km) |
| Duncan to Auburn (Maine) | 1,609.54 mi (2,590.31 km) |
| Duncan to Auburn (New York) | 1,283.61 mi (2,065.76 km) |
| Duncan to Auburn (Washington) | 1,534.12 mi (2,468.93 km) |
| Duncan to Auburn Hills (Michigan) | 969.16 mi (1,559.72 km) |
| Duncan to Auburndale (Florida) | 1,048.81 mi (1,687.90 km) |
| Duncan to Augusta (Georgia) | 911.14 mi (1,466.33 km) |
| Duncan to Augusta (Maine) | 1,638.68 mi (2,637.21 km) |
| Duncan to Aurora (Colorado) | 517.28 mi (832.49 km) |
| Duncan to Aurora (Illinois) | 722.23 mi (1,162.32 km) |
| Duncan to Aurora (Ohio) | 1,015.00 mi (1,633.48 km) |
