| Monroe to Lovington (New Mexico) | 654.26 mi (1,052.93 km) |
| Monroe to Lowell (Indiana) | 658.26 mi (1,059.37 km) |
| Monroe to Lowell (Massachusetts) | 1,328.92 mi (2,138.69 km) |
| Monroe to Lower Burrell (Pennsylvania) | 882.37 mi (1,420.04 km) |
| Monroe to Lowes Island (Virginia) | 938.89 mi (1,510.99 km) |
| Monroe to Lubbock (Texas) | 572.58 mi (921.48 km) |
| Monroe to Lufkin (Texas) | 176.05 mi (283.32 km) |
| Monroe to Luling (Louisiana) | 207.61 mi (334.11 km) |
| Monroe to Lumberton (North Carolina) | 765.20 mi (1,231.47 km) |
| Monroe to Lumberton (Texas) | 200.51 mi (322.70 km) |
| Monroe to Lutz (Florida) | 648.76 mi (1,044.08 km) |
| Monroe to Lynbrook (New York) | 1,162.23 mi (1,870.43 km) |
| Monroe to Lynchburg (Virginia) | 802.94 mi (1,292.21 km) |
| Monroe to Lynden (Washington) | 1,933.02 mi (3,110.90 km) |
| Monroe to Lyndhurst (Ohio) | 851.66 mi (1,370.62 km) |
