| Frederick to Lowell (Indiana) | 541.82 mi (871.98 km) |
| Frederick to Lowell (Massachusetts) | 386.95 mi (622.74 km) |
| Frederick to Lower Burrell (Pennsylvania) | 145.28 mi (233.81 km) |
| Frederick to Lowes Island (Virginia) | 26.91 mi (43.32 km) |
| Frederick to Lubbock (Texas) | 1,413.43 mi (2,274.70 km) |
| Frederick to Lufkin (Texas) | 1,122.07 mi (1,805.80 km) |
| Frederick to Luling (Louisiana) | 985.20 mi (1,585.53 km) |
| Frederick to Lumberton (North Carolina) | 343.40 mi (552.65 km) |
| Frederick to Lumberton (Texas) | 1,141.03 mi (1,836.31 km) |
| Frederick to Lutz (Florida) | 831.75 mi (1,338.57 km) |
| Frederick to Lynbrook (New York) | 215.12 mi (346.19 km) |
| Frederick to Lynchburg (Virginia) | 170.26 mi (274.00 km) |
| Frederick to Lynden (Washington) | 2,289.13 mi (3,683.99 km) |
| Frederick to Lyndhurst (Ohio) | 258.15 mi (415.45 km) |
| Frederick to Lyndon (Kentucky) | 447.09 mi (719.51 km) |
