| Duncan to Fairmount (New York) | 1,301.34 mi (2,094.30 km) |
| Duncan to Fairview (California) | 1,360.15 mi (2,188.95 km) |
| Duncan to Fairview (New Jersey) | 1,372.88 mi (2,209.44 km) |
| Duncan to Fairview (Oregon) | 1,494.39 mi (2,404.99 km) |
| Duncan to Fairview Heights (Illinois) | 520.77 mi (838.10 km) |
| Duncan to Fairview Park (Ohio) | 994.18 mi (1,599.99 km) |
| Duncan to Fairview Shores (Florida) | 1,054.09 mi (1,696.40 km) |
| Duncan to Fairwood (Washington) | 1,535.68 mi (2,471.44 km) |
| Duncan to Fajardo (Puerto Rico) | 2,273.77 mi (3,659.29 km) |
| Duncan to Fall River (Massachusetts) | 1,532.21 mi (2,465.85 km) |
| Duncan to Fallbrook (California) | 1,107.63 mi (1,782.56 km) |
| Duncan to Falls Church (Virginia) | 1,184.75 mi (1,906.68 km) |
| Duncan to Fargo (North Dakota) | 853.42 mi (1,373.45 km) |
| Duncan to Faribault (Minnesota) | 718.04 mi (1,155.57 km) |
| Duncan to Farmers Branch (Texas) | 126.52 mi (203.62 km) |
