| Duncan to Laguna Beach (California) | 1,136.12 mi (1,828.41 km) |
| Duncan to Laguna Hills (California) | 1,132.09 mi (1,821.92 km) |
| Duncan to Laguna Niguel (California) | 1,133.12 mi (1,823.57 km) |
| Duncan to Laguna Woods (California) | 1,133.65 mi (1,824.43 km) |
| Duncan to Lahaina (Hawaii) | 3,663.56 mi (5,895.94 km) |
| Duncan to Lake Arbor (Maryland) | 1,203.36 mi (1,936.61 km) |
| Duncan to Lake Barcroft (Virginia) | 1,185.34 mi (1,907.62 km) |
| Duncan to Lake Butler (Florida) | 1,049.67 mi (1,689.28 km) |
| Duncan to Lake Charles (Louisiana) | 406.67 mi (654.47 km) |
| Duncan to Lake City (Florida) | 939.56 mi (1,512.08 km) |
| Duncan to Lake Elmo (Minnesota) | 769.47 mi (1,238.34 km) |
| Duncan to Lake Elsinore (California) | 1,110.38 mi (1,786.98 km) |
| Duncan to Lake Forest (California) | 1,129.79 mi (1,818.22 km) |
| Duncan to Lake Forest (Illinois) | 760.38 mi (1,223.72 km) |
| Duncan to Lake Forest Park (Washington) | 1,551.36 mi (2,496.67 km) |
