| Duncan to Elkhorn (Wisconsin) | 755.52 mi (1,215.89 km) |
| Duncan to Elko (Nevada) | 1,065.77 mi (1,715.19 km) |
| Duncan to Elkridge (Maryland) | 1,210.86 mi (1,948.69 km) |
| Duncan to Elkton (Maryland) | 1,263.92 mi (2,034.08 km) |
| Duncan to Ellensburg (Washington) | 1,455.01 mi (2,341.61 km) |
| Duncan to Ellicott City (Maryland) | 1,206.91 mi (1,942.33 km) |
| Duncan to Elmhurst (Illinois) | 741.83 mi (1,193.85 km) |
| Duncan to Elmira (New York) | 1,253.38 mi (2,017.11 km) |
| Duncan to Elmont (New York) | 1,386.60 mi (2,231.52 km) |
| Duncan to Elmwood Park (Illinois) | 747.95 mi (1,203.71 km) |
| Duncan to Elmwood Park (New Jersey) | 1,367.96 mi (2,201.52 km) |
| Duncan to Elon (North Carolina) | 1,042.04 mi (1,677.00 km) |
| Duncan to Eloy (Arizona) | 795.80 mi (1,280.72 km) |
| Duncan to Elwood (New York) | 1,407.34 mi (2,264.89 km) |
| Duncan to Elyria (Ohio) | 980.35 mi (1,577.72 km) |
