| Duncan to La Riviera (California) | 1,326.14 mi (2,134.21 km) |
| Duncan to La Vergne (Tennessee) | 648.61 mi (1,043.84 km) |
| Duncan to La Verne (California) | 1,131.06 mi (1,820.27 km) |
| Duncan to La Vista (Nebraska) | 469.83 mi (756.11 km) |
| Duncan to Lacey (Washington) | 1,551.11 mi (2,496.27 km) |
| Duncan to Lackawanna (New York) | 1,173.86 mi (1,889.15 km) |
| Duncan to Laconia (New Hampshire) | 1,541.30 mi (2,480.49 km) |
| Duncan to Ladera Ranch (California) | 1,129.28 mi (1,817.40 km) |
| Duncan to Ladson (South Carolina) | 1,027.19 mi (1,653.11 km) |
| Duncan to Lady Lake (Florida) | 1,015.19 mi (1,633.79 km) |
| Duncan to Lafayette (California) | 1,364.60 mi (2,196.12 km) |
| Duncan to Lafayette (Colorado) | 545.33 mi (877.63 km) |
| Duncan to Lafayette (Indiana) | 728.37 mi (1,172.19 km) |
| Duncan to Lafayette (Louisiana) | 455.58 mi (733.18 km) |
| Duncan to LaGrange (Georgia) | 746.65 mi (1,201.62 km) |
