| Olbia to Hazleton (Pennsylvania) | 4,262.02 mi (6,859.06 km) |
| Olbia to Healdsburg (California) | 6,174.90 mi (9,937.54 km) |
| Olbia to Heath (Ohio) | 4,582.35 mi (7,374.58 km) |
| Olbia to Heber (Utah) | 5,700.78 mi (9,174.52 km) |
| Olbia to Helena (Alabama) | 5,056.74 mi (8,138.04 km) |
| Olbia to Helena (Montana) | 5,403.52 mi (8,696.12 km) |
| Olbia to Hemet (California) | 6,258.18 mi (10,071.57 km) |
| Olbia to Henderson (Kentucky) | 4,894.45 mi (7,876.86 km) |
| Olbia to Henderson (Nevada) | 6,065.73 mi (9,761.86 km) |
| Olbia to Henderson (North Carolina) | 4,545.44 mi (7,315.18 km) |
| Olbia to Henderson (Texas) | 5,459.08 mi (8,785.54 km) |
| Olbia to Hendersonville (North Carolina) | 4,770.50 mi (7,677.38 km) |
| Olbia to Hendersonville (Tennessee) | 4,915.97 mi (7,911.49 km) |
| Olbia to Hercules (California) | 6,191.62 mi (9,964.45 km) |
| Olbia to Hereford (Texas) | 5,651.85 mi (9,095.77 km) |
