| Gaithersburg to Lowell (Indiana) | 558.38 mi (898.63 km) |
| Gaithersburg to Lowell (Massachusetts) | 391.40 mi (629.90 km) |
| Gaithersburg to Lower Burrell (Pennsylvania) | 166.10 mi (267.32 km) |
| Gaithersburg to Lowes Island (Virginia) | 9.61 mi (15.47 km) |
| Gaithersburg to Lubbock (Texas) | 1,421.00 mi (2,286.88 km) |
| Gaithersburg to Lufkin (Texas) | 1,123.49 mi (1,808.09 km) |
| Gaithersburg to Luling (Louisiana) | 981.24 mi (1,579.15 km) |
| Gaithersburg to Lumberton (North Carolina) | 326.74 mi (525.84 km) |
| Gaithersburg to Lumberton (Texas) | 1,140.83 mi (1,835.99 km) |
| Gaithersburg to Lutz (Florida) | 816.75 mi (1,314.44 km) |
| Gaithersburg to Lynbrook (New York) | 215.08 mi (346.13 km) |
| Gaithersburg to Lynchburg (Virginia) | 160.83 mi (258.83 km) |
| Gaithersburg to Lynden (Washington) | 2,309.18 mi (3,716.27 km) |
| Gaithersburg to Lyndhurst (Ohio) | 279.06 mi (449.10 km) |
| Gaithersburg to Lyndon (Kentucky) | 455.47 mi (733.01 km) |
