| Duncan to Fort Meade (Maryland) | 1,209.90 mi (1,947.14 km) |
| Duncan to Fort Mill (South Carolina) | 963.21 mi (1,550.14 km) |
| Duncan to Fort Mohave (Arizona) | 944.62 mi (1,520.21 km) |
| Duncan to Fort Morgan (Colorado) | 509.23 mi (819.52 km) |
| Duncan to Fort Myers (Florida) | 1,100.53 mi (1,771.13 km) |
| Duncan to Fort Oglethorpe (Georgia) | 719.74 mi (1,158.30 km) |
| Duncan to Fort Payne (Alabama) | 695.72 mi (1,119.66 km) |
| Duncan to Fort Pierce (Florida) | 1,149.23 mi (1,849.51 km) |
| Duncan to Fort Smith (Arkansas) | 208.77 mi (335.99 km) |
| Duncan to Fort Thomas (Kentucky) | 807.38 mi (1,299.35 km) |
| Duncan to Fort Walton Beach (Florida) | 716.75 mi (1,153.50 km) |
| Duncan to Fort Washington (Maryland) | 1,192.29 mi (1,918.80 km) |
| Duncan to Fort Wayne (Indiana) | 830.00 mi (1,335.75 km) |
| Duncan to Fort Worth (Texas) | 125.95 mi (202.69 km) |
| Duncan to Fortuna (California) | 1,489.26 mi (2,396.73 km) |
