| Rockville to Lovington (New Mexico) | 1,517.83 mi (2,442.71 km) |
| Rockville to Lowell (Indiana) | 562.46 mi (905.19 km) |
| Rockville to Lowell (Massachusetts) | 391.33 mi (629.79 km) |
| Rockville to Lower Burrell (Pennsylvania) | 170.72 mi (274.75 km) |
| Rockville to Lowes Island (Virginia) | 10.87 mi (17.49 km) |
| Rockville to Lubbock (Texas) | 1,423.58 mi (2,291.04 km) |
| Rockville to Lufkin (Texas) | 1,124.95 mi (1,810.43 km) |
| Rockville to Luling (Louisiana) | 981.63 mi (1,579.78 km) |
| Rockville to Lumberton (North Carolina) | 324.38 mi (522.05 km) |
| Rockville to Lumberton (Texas) | 1,141.97 mi (1,837.82 km) |
| Rockville to Lutz (Florida) | 814.73 mi (1,311.18 km) |
| Rockville to Lynbrook (New York) | 214.24 mi (344.79 km) |
| Rockville to Lynchburg (Virginia) | 160.38 mi (258.11 km) |
| Rockville to Lynden (Washington) | 2,313.69 mi (3,723.53 km) |
| Rockville to Lyndhurst (Ohio) | 283.67 mi (456.53 km) |
