| Duncan to Mill Creek East (Washington) | 1,549.78 mi (2,494.14 km) |
| Duncan to Mill Valley (California) | 1,387.70 mi (2,233.29 km) |
| Duncan to Millbrae (California) | 1,379.42 mi (2,219.96 km) |
| Duncan to Millbrook (Alabama) | 679.50 mi (1,093.54 km) |
| Duncan to Millcreek (Utah) | 870.20 mi (1,400.45 km) |
| Duncan to Milledgeville (Georgia) | 847.92 mi (1,364.60 km) |
| Duncan to Miller Place (New York) | 1,426.56 mi (2,295.83 km) |
| Duncan to Millington (Tennessee) | 457.57 mi (736.38 km) |
| Duncan to Millville (New Jersey) | 1,302.06 mi (2,095.47 km) |
| Duncan to Milpitas (California) | 1,351.20 mi (2,174.55 km) |
| Duncan to Milton (Georgia) | 776.26 mi (1,249.27 km) |
| Duncan to Milwaukee (Wisconsin) | 795.14 mi (1,279.65 km) |
| Duncan to Milwaukie (Oregon) | 1,500.00 mi (2,414.02 km) |
| Duncan to Minden (Louisiana) | 298.51 mi (480.41 km) |
| Duncan to Mineola (New York) | 1,390.66 mi (2,238.05 km) |
