| Olbia to Grovetown (Georgia) | 4,835.61 mi (7,782.16 km) |
| Olbia to Guayama (Puerto Rico) | 4,672.11 mi (7,519.04 km) |
| Olbia to Guaynabo (Puerto Rico) | 4,655.03 mi (7,491.55 km) |
| Olbia to Gulf Shores (Alabama) | 5,224.63 mi (8,408.23 km) |
| Olbia to Gulfport (Florida) | 5,098.50 mi (8,205.24 km) |
| Olbia to Gulfport (Mississippi) | 5,280.94 mi (8,498.84 km) |
| Olbia to Gunbarrel (Colorado) | 5,501.31 mi (8,853.51 km) |
| Olbia to Gurnee (Illinois) | 4,721.78 mi (7,598.96 km) |
| Olbia to Guthrie (Oklahoma) | 5,400.78 mi (8,691.71 km) |
| Olbia to Guttenberg (New Jersey) | 4,179.26 mi (6,725.88 km) |
| Olbia to Guymon (Oklahoma) | 5,524.43 mi (8,890.71 km) |
| Olbia to Hacienda Heights (California) | 6,277.50 mi (10,102.65 km) |
| Olbia to Hackensack (New Jersey) | 4,177.76 mi (6,723.46 km) |
| Olbia to Hackettstown (New Jersey) | 4,214.08 mi (6,781.90 km) |
| Olbia to Hagerstown (Maryland) | 4,388.09 mi (7,061.95 km) |
