| Round Rock to Holbrook (New York) | 1,544.79 mi (2,486.10 km) |
| Round Rock to Holiday (Florida) | 912.28 mi (1,468.18 km) |
| Round Rock to Holiday City-Berkeley (New Jersey) | 1,465.76 mi (2,358.92 km) |
| Round Rock to Holladay (Utah) | 1,057.20 mi (1,701.40 km) |
| Round Rock to Holland (Michigan) | 1,059.10 mi (1,704.46 km) |
| Round Rock to Hollins (Virginia) | 1,116.75 mi (1,797.23 km) |
| Round Rock to Hollister (California) | 1,428.36 mi (2,298.72 km) |
| Round Rock to Holly Hill (Florida) | 998.52 mi (1,606.96 km) |
| Round Rock to Holly Springs (Georgia) | 808.66 mi (1,301.41 km) |
| Round Rock to Holly Springs (North Carolina) | 1,143.61 mi (1,840.46 km) |
| Round Rock to Hollywood (Florida) | 1,107.65 mi (1,782.59 km) |
| Round Rock to Holmen (Wisconsin) | 992.49 mi (1,597.26 km) |
| Round Rock to Holt (Michigan) | 1,107.01 mi (1,781.56 km) |
| Round Rock to Holtsville (New York) | 1,546.45 mi (2,488.78 km) |
| Round Rock to Holyoke (Massachusetts) | 1,600.40 mi (2,575.60 km) |
