| Round Rock to Hagerstown (Maryland) | 1,287.21 mi (2,071.56 km) |
| Round Rock to Haines City (Florida) | 980.24 mi (1,577.54 km) |
| Round Rock to Halawa (Hawaii) | 3,753.84 mi (6,041.23 km) |
| Round Rock to Half Moon Bay (California) | 1,492.70 mi (2,402.27 km) |
| Round Rock to Halfway (Maryland) | 1,284.18 mi (2,066.69 km) |
| Round Rock to Hallandale Beach (Florida) | 1,110.19 mi (1,786.68 km) |
| Round Rock to Haltom City (Texas) | 159.95 mi (257.41 km) |
| Round Rock to Ham Lake (Minnesota) | 1,045.79 mi (1,683.03 km) |
| Round Rock to Hamilton (Ohio) | 960.20 mi (1,545.30 km) |
| Round Rock to Hamilton Square (New Jersey) | 1,453.23 mi (2,338.74 km) |
| Round Rock to Hammond (Indiana) | 952.36 mi (1,532.67 km) |
| Round Rock to Hammond (Louisiana) | 428.96 mi (690.35 km) |
| Round Rock to Hammonton (New Jersey) | 1,434.31 mi (2,308.30 km) |
| Round Rock to Hampton (Virginia) | 1,300.14 mi (2,092.37 km) |
| Round Rock to Hampton Bays (New York) | 1,573.52 mi (2,532.34 km) |
