| Duncan to Murray (Kentucky) | 557.95 mi (897.93 km) |
| Duncan to Murray (Utah) | 871.84 mi (1,403.09 km) |
| Duncan to Murraysville (North Carolina) | 1,142.70 mi (1,838.99 km) |
| Duncan to Murrieta (California) | 1,103.40 mi (1,775.74 km) |
| Duncan to Murrysville (Pennsylvania) | 1,078.68 mi (1,735.96 km) |
| Duncan to Muscatine (Iowa) | 603.87 mi (971.84 km) |
| Duncan to Muscle Shoals (Alabama) | 584.68 mi (940.96 km) |
| Duncan to Muscoy (California) | 1,106.79 mi (1,781.20 km) |
| Duncan to Muskego (Wisconsin) | 780.68 mi (1,256.39 km) |
| Duncan to Muskegon (Michigan) | 866.68 mi (1,394.79 km) |
| Duncan to Muskogee (Oklahoma) | 167.03 mi (268.80 km) |
| Duncan to Mustang (Oklahoma) | 59.84 mi (96.30 km) |
| Duncan to Myers Corner (New York) | 1,389.87 mi (2,236.79 km) |
| Duncan to Myrtle Beach (South Carolina) | 1,088.76 mi (1,752.19 km) |
| Duncan to Myrtle Grove (Florida) | 680.90 mi (1,095.81 km) |
