| Round Rock to Humble (Texas) | 147.84 mi (237.93 km) |
| Round Rock to Hunters Creek (Florida) | 986.95 mi (1,588.34 km) |
| Round Rock to Huntersville (North Carolina) | 1,028.55 mi (1,655.29 km) |
| Round Rock to Huntington (Indiana) | 986.54 mi (1,587.69 km) |
| Round Rock to Huntington (Virginia) | 1,298.01 mi (2,088.95 km) |
| Round Rock to Huntington (West Virginia) | 1,022.27 mi (1,645.18 km) |
| Round Rock to Huntington Beach (California) | 1,208.11 mi (1,944.27 km) |
| Round Rock to Huntington Park (California) | 1,222.18 mi (1,966.91 km) |
| Round Rock to Huntington Station (New York) | 1,529.49 mi (2,461.47 km) |
| Round Rock to Huntley (Illinois) | 952.56 mi (1,533.00 km) |
| Round Rock to Huntsville (Alabama) | 702.74 mi (1,130.96 km) |
| Round Rock to Huntsville (Texas) | 125.89 mi (202.60 km) |
| Round Rock to Huron (South Dakota) | 956.39 mi (1,539.16 km) |
| Round Rock to Hurricane (Utah) | 1,008.05 mi (1,622.31 km) |
| Round Rock to Hurst (Texas) | 162.00 mi (260.71 km) |
