| Rio Grande City to Lombard (Illinois) | 1,233.69 mi (1,985.43 km) |
| Rio Grande City to Lomita (California) | 1,270.30 mi (2,044.36 km) |
| Rio Grande City to Lompoc (California) | 1,405.98 mi (2,262.71 km) |
| Rio Grande City to London (Ohio) | 1,286.10 mi (2,069.78 km) |
| Rio Grande City to Lone Tree (Colorado) | 973.28 mi (1,566.34 km) |
| Rio Grande City to Long Beach (California) | 1,262.22 mi (2,031.34 km) |
| Rio Grande City to Long Beach (Mississippi) | 647.93 mi (1,042.74 km) |
| Rio Grande City to Long Beach (New York) | 1,740.58 mi (2,801.19 km) |
| Rio Grande City to Long Branch (New Jersey) | 1,716.26 mi (2,762.05 km) |
| Rio Grande City to Longmont (Colorado) | 1,018.62 mi (1,639.31 km) |
| Rio Grande City to Longview (Texas) | 489.30 mi (787.45 km) |
| Rio Grande City to Longview (Washington) | 1,901.87 mi (3,060.76 km) |
| Rio Grande City to Longwood (Florida) | 1,081.37 mi (1,740.30 km) |
| Rio Grande City to Lorain (Ohio) | 1,406.58 mi (2,263.68 km) |
| Rio Grande City to Lorton (Virginia) | 1,512.90 mi (2,434.78 km) |
