| Duncan to Enumclaw (Washington) | 1,521.70 mi (2,448.93 km) |
| Duncan to Ephrata (Pennsylvania) | 1,252.12 mi (2,015.09 km) |
| Duncan to Erie (Colorado) | 545.07 mi (877.21 km) |
| Duncan to Erie (Pennsylvania) | 1,096.81 mi (1,765.15 km) |
| Duncan to Erlanger (Kentucky) | 799.01 mi (1,285.88 km) |
| Duncan to Escanaba (Michigan) | 960.82 mi (1,546.29 km) |
| Duncan to Escondido (California) | 1,101.69 mi (1,773.01 km) |
| Duncan to Española (New Mexico) | 470.41 mi (757.04 km) |
| Duncan to Essex (Maryland) | 1,227.75 mi (1,975.88 km) |
| Duncan to Essex Junction (Vermont) | 1,482.05 mi (2,385.13 km) |
| Duncan to Estelle (Louisiana) | 560.33 mi (901.77 km) |
| Duncan to Estero (Florida) | 1,109.73 mi (1,785.94 km) |
| Duncan to Euclid (Ohio) | 1,014.12 mi (1,632.08 km) |
| Duncan to Eufaula (Alabama) | 759.60 mi (1,222.45 km) |
| Duncan to Eugene (Oregon) | 1,490.88 mi (2,399.35 km) |
