| Duncan to Kilgore (Texas) | 230.31 mi (370.64 km) |
| Duncan to Killeen (Texas) | 239.70 mi (385.76 km) |
| Duncan to King City (California) | 1,309.60 mi (2,107.59 km) |
| Duncan to King of Prussia (Pennsylvania) | 1,292.52 mi (2,080.10 km) |
| Duncan to Kingman (Arizona) | 912.15 mi (1,467.96 km) |
| Duncan to Kings Mountain (North Carolina) | 939.32 mi (1,511.70 km) |
| Duncan to Kings Park (New York) | 1,412.55 mi (2,273.27 km) |
| Duncan to Kings Park West (Virginia) | 1,177.63 mi (1,895.21 km) |
| Duncan to Kingsburg (California) | 1,221.77 mi (1,966.26 km) |
| Duncan to Kingsland (Georgia) | 975.33 mi (1,569.64 km) |
| Duncan to Kingsport (Tennessee) | 874.36 mi (1,407.15 km) |
| Duncan to Kingston (New York) | 1,389.37 mi (2,235.98 km) |
| Duncan to Kingston (Pennsylvania) | 1,283.52 mi (2,065.63 km) |
| Duncan to Kingstowne (Virginia) | 1,185.21 mi (1,907.41 km) |
| Duncan to Kingsville (Texas) | 485.84 mi (781.88 km) |
