| Giffnock to Hazleton (Pennsylvania) | 3,282.18 mi (5,282.16 km) |
| Giffnock to Healdsburg (California) | 4,986.04 mi (8,024.26 km) |
| Giffnock to Heath (Ohio) | 3,569.31 mi (5,744.25 km) |
| Giffnock to Heber (Utah) | 4,539.14 mi (7,305.05 km) |
| Giffnock to Helena (Alabama) | 4,078.74 mi (6,564.10 km) |
| Giffnock to Helena (Montana) | 4,221.24 mi (6,793.42 km) |
| Giffnock to Hemet (California) | 5,099.23 mi (8,206.42 km) |
| Giffnock to Henderson (Kentucky) | 3,868.70 mi (6,226.07 km) |
| Giffnock to Henderson (Nevada) | 4,906.67 mi (7,896.52 km) |
| Giffnock to Henderson (North Carolina) | 3,601.89 mi (5,796.68 km) |
| Giffnock to Henderson (Texas) | 4,432.07 mi (7,132.73 km) |
| Giffnock to Hendersonville (North Carolina) | 3,806.23 mi (6,125.53 km) |
| Giffnock to Hendersonville (Tennessee) | 3,911.12 mi (6,294.34 km) |
| Giffnock to Hercules (California) | 5,005.26 mi (8,055.19 km) |
| Giffnock to Hereford (Texas) | 4,557.85 mi (7,335.14 km) |
