| Round Rock to Hutchinson (Kansas) | 521.16 mi (838.72 km) |
| Round Rock to Hutchinson (Minnesota) | 1,007.98 mi (1,622.19 km) |
| Round Rock to Hutto (Texas) | 7.21 mi (11.60 km) |
| Round Rock to Hyattsville (Maryland) | 1,308.04 mi (2,105.09 km) |
| Round Rock to Hybla Valley (Virginia) | 1,296.59 mi (2,086.66 km) |
| Round Rock to Idaho Falls (Idaho) | 1,192.55 mi (1,919.23 km) |
| Round Rock to Idylwood (Virginia) | 1,293.68 mi (2,081.98 km) |
| Round Rock to Ilchester (Maryland) | 1,323.61 mi (2,130.14 km) |
| Round Rock to Immokalee (Florida) | 1,025.07 mi (1,649.69 km) |
| Round Rock to Imperial (California) | 1,063.63 mi (1,711.75 km) |
| Round Rock to Imperial Beach (California) | 1,152.49 mi (1,854.75 km) |
| Round Rock to Independence (Kentucky) | 943.41 mi (1,518.28 km) |
| Round Rock to Independence (Missouri) | 620.48 mi (998.56 km) |
| Round Rock to Indian Trail (North Carolina) | 1,035.50 mi (1,666.48 km) |
| Round Rock to Indiana (Pennsylvania) | 1,248.25 mi (2,008.86 km) |
