| Round Rock to Hickory Hills (Illinois) | 947.20 mi (1,524.37 km) |
| Round Rock to Hicksville (New York) | 1,521.70 mi (2,448.94 km) |
| Round Rock to Hidalgo (Texas) | 307.30 mi (494.55 km) |
| Round Rock to High Point (North Carolina) | 1,086.51 mi (1,748.57 km) |
| Round Rock to Highland (California) | 1,163.32 mi (1,872.18 km) |
| Round Rock to Highland (Illinois) | 727.01 mi (1,170.01 km) |
| Round Rock to Highland (Indiana) | 949.79 mi (1,528.53 km) |
| Round Rock to Highland (Utah) | 1,046.47 mi (1,684.13 km) |
| Round Rock to Highland City (Florida) | 967.17 mi (1,556.51 km) |
| Round Rock to Highland Park (Illinois) | 972.72 mi (1,565.43 km) |
| Round Rock to Highland Park (New Jersey) | 1,470.94 mi (2,367.25 km) |
| Round Rock to Highland Springs (Virginia) | 1,258.04 mi (2,024.62 km) |
| Round Rock to Highland Village (Texas) | 180.57 mi (290.59 km) |
| Round Rock to Highlands Ranch (Colorado) | 746.92 mi (1,202.05 km) |
| Round Rock to Hillcrest (California) | 1,276.40 mi (2,054.17 km) |
