| Round Rock to Lombard (Illinois) | 949.40 mi (1,527.91 km) |
| Round Rock to Lomita (California) | 1,226.76 mi (1,974.28 km) |
| Round Rock to Lompoc (California) | 1,354.89 mi (2,180.48 km) |
| Round Rock to London (Ohio) | 1,029.14 mi (1,656.25 km) |
| Round Rock to Lone Tree (Colorado) | 743.20 mi (1,196.07 km) |
| Round Rock to Long Beach (California) | 1,218.18 mi (1,960.47 km) |
| Round Rock to Long Beach (Mississippi) | 506.28 mi (814.77 km) |
| Round Rock to Long Beach (New York) | 1,510.60 mi (2,431.08 km) |
| Round Rock to Long Branch (New Jersey) | 1,487.69 mi (2,394.20 km) |
| Round Rock to Longmont (Colorado) | 786.31 mi (1,265.45 km) |
| Round Rock to Longview (Texas) | 219.44 mi (353.16 km) |
| Round Rock to Longview (Washington) | 1,731.75 mi (2,786.98 km) |
| Round Rock to Longwood (Florida) | 987.23 mi (1,588.80 km) |
| Round Rock to Lorain (Ohio) | 1,144.66 mi (1,842.16 km) |
| Round Rock to Lorton (Virginia) | 1,288.61 mi (2,073.81 km) |
