| Olbia to Harrison (Wisconsin) | 4,662.07 mi (7,502.87 km) |
| Olbia to Harrisonburg (Virginia) | 4,485.23 mi (7,218.29 km) |
| Olbia to Hartford (Connecticut) | 4,086.29 mi (6,576.24 km) |
| Olbia to Hartford (Wisconsin) | 4,700.87 mi (7,565.32 km) |
| Olbia to Hartselle (Alabama) | 5,010.11 mi (8,062.99 km) |
| Olbia to Hartsville (Tennessee) | 4,892.78 mi (7,874.17 km) |
| Olbia to Harvey (Illinois) | 4,741.13 mi (7,630.10 km) |
| Olbia to Harvey (Louisiana) | 5,350.50 mi (8,610.80 km) |
| Olbia to Hasbrouck Heights (New Jersey) | 4,179.98 mi (6,727.02 km) |
| Olbia to Haslett (Michigan) | 4,559.67 mi (7,338.08 km) |
| Olbia to Hastings (Minnesota) | 4,819.33 mi (7,755.95 km) |
| Olbia to Hastings (Nebraska) | 5,218.36 mi (8,398.14 km) |
| Olbia to Hattiesburg (Mississippi) | 5,253.32 mi (8,454.40 km) |
| Olbia to Hauppauge (New York) | 4,142.39 mi (6,666.53 km) |
| Olbia to Havelock (North Carolina) | 4,529.79 mi (7,290.00 km) |
