| Johnston to Hamilton | 3,902.21 mi (6,280.00 km) |
| Johnston to Hammersmith | 4,181.69 mi (6,729.78 km) |
| Johnston to Hampton | 4,178.90 mi (6,725.30 km) |
| Johnston to Hamworthy | 4,142.33 mi (6,666.43 km) |
| Johnston to Handsworth | 4,073.47 mi (6,555.62 km) |
| Johnston to Hanwell | 4,176.87 mi (6,722.03 km) |
| Johnston to Harborne | 4,084.50 mi (6,573.37 km) |
| Johnston to Harlow | 4,184.34 mi (6,734.05 km) |
| Johnston to Harpenden | 4,165.38 mi (6,703.53 km) |
| Johnston to Harrogate | 4,047.57 mi (6,513.93 km) |
| Johnston to Harrow | 4,173.91 mi (6,717.26 km) |
| Johnston to Harrow on the Hill | 4,175.06 mi (6,719.11 km) |
| Johnston to Harrow Weald | 4,173.46 mi (6,716.53 km) |
| Johnston to Hartlepool | 4,035.78 mi (6,494.96 km) |
| Johnston to Harwich | 4,220.16 mi (6,791.69 km) |
