| Gretna to Hamilton | 4,387.40 mi (7,060.83 km) |
| Gretna to Hammersmith | 4,624.59 mi (7,442.55 km) |
| Gretna to Hampton | 4,620.38 mi (7,435.78 km) |
| Gretna to Hamworthy | 4,568.78 mi (7,352.74 km) |
| Gretna to Handsworth | 4,535.87 mi (7,299.79 km) |
| Gretna to Hanwell | 4,619.55 mi (7,434.44 km) |
| Gretna to Harborne | 4,533.48 mi (7,295.93 km) |
| Gretna to Harlow | 4,632.11 mi (7,454.66 km) |
| Gretna to Harpenden | 4,611.87 mi (7,422.09 km) |
| Gretna to Harrogate | 4,517.38 mi (7,270.02 km) |
| Gretna to Harrow | 4,617.49 mi (7,431.13 km) |
| Gretna to Harrow on the Hill | 4,618.46 mi (7,432.69 km) |
| Gretna to Harrow Weald | 4,617.32 mi (7,430.85 km) |
| Gretna to Hartlepool | 4,515.40 mi (7,266.84 km) |
| Gretna to Harwich | 4,674.04 mi (7,522.14 km) |
