| Duncan to Lawndale (California) | 1,166.26 mi (1,876.92 km) |
| Duncan to Lawrence (Indiana) | 751.76 mi (1,209.84 km) |
| Duncan to Lawrence (Kansas) | 338.87 mi (545.35 km) |
| Duncan to Lawrence (Massachusetts) | 1,542.47 mi (2,482.36 km) |
| Duncan to Lawrenceburg (Kentucky) | 763.34 mi (1,228.48 km) |
| Duncan to Lawrenceburg (Tennessee) | 601.79 mi (968.49 km) |
| Duncan to Lawrenceville (Georgia) | 795.91 mi (1,280.90 km) |
| Duncan to Lawton (Oklahoma) | 28.86 mi (46.45 km) |
| Duncan to Layton (Utah) | 887.97 mi (1,429.04 km) |
| Duncan to Le Mars (Iowa) | 577.06 mi (928.69 km) |
| Duncan to League City (Texas) | 386.04 mi (621.27 km) |
| Duncan to Lealman (Florida) | 1,011.75 mi (1,628.25 km) |
| Duncan to Leander (Texas) | 274.18 mi (441.26 km) |
| Duncan to Leavenworth (Kansas) | 369.57 mi (594.76 km) |
| Duncan to Leawood (Kansas) | 352.55 mi (567.38 km) |
