| Round Rock to Hereford (Texas) | 404.79 mi (651.45 km) |
| Round Rock to Hermiston (Oregon) | 1,570.83 mi (2,528.00 km) |
| Round Rock to Hermitage (Pennsylvania) | 1,211.29 mi (1,949.38 km) |
| Round Rock to Hermosa Beach (California) | 1,231.69 mi (1,982.22 km) |
| Round Rock to Hernando (Mississippi) | 536.61 mi (863.60 km) |
| Round Rock to Herndon (Virginia) | 1,286.51 mi (2,070.44 km) |
| Round Rock to Herriman (Utah) | 1,058.40 mi (1,703.33 km) |
| Round Rock to Herrin (Illinois) | 703.65 mi (1,132.41 km) |
| Round Rock to Hershey (Pennsylvania) | 1,357.00 mi (2,183.88 km) |
| Round Rock to Hesperia (California) | 1,174.31 mi (1,889.87 km) |
| Round Rock to Hewitt (Texas) | 69.67 mi (112.12 km) |
| Round Rock to Hialeah (Florida) | 1,103.59 mi (1,776.06 km) |
| Round Rock to Hialeah Gardens (Florida) | 1,100.10 mi (1,770.44 km) |
| Round Rock to Hibbing (Minnesota) | 1,192.30 mi (1,918.82 km) |
| Round Rock to Hickory (North Carolina) | 1,010.22 mi (1,625.80 km) |
