| Round Rock to Hamilton | 4,635.13 mi (7,459.52 km) |
| Round Rock to Hammersmith | 4,895.34 mi (7,878.29 km) |
| Round Rock to Hampton | 4,891.81 mi (7,872.62 km) |
| Round Rock to Hamworthy | 4,847.30 mi (7,800.98 km) |
| Round Rock to Handsworth | 4,796.31 mi (7,718.91 km) |
| Round Rock to Hanwell | 4,890.38 mi (7,870.31 km) |
| Round Rock to Harborne | 4,800.73 mi (7,726.02 km) |
| Round Rock to Harlow | 4,900.46 mi (7,886.54 km) |
| Round Rock to Harpenden | 4,880.77 mi (7,854.83 km) |
| Round Rock to Harrogate | 4,773.88 mi (7,682.82 km) |
| Round Rock to Harrow | 4,887.86 mi (7,866.26 km) |
| Round Rock to Harrow on the Hill | 4,888.93 mi (7,867.97 km) |
| Round Rock to Harrow Weald | 4,887.55 mi (7,865.75 km) |
| Round Rock to Hartlepool | 4,766.73 mi (7,671.31 km) |
| Round Rock to Harwich | 4,939.52 mi (7,949.39 km) |
