| Olbia to Dardenne Prairie (Missouri) | 4,990.02 mi (8,030.66 km) |
| Olbia to Darien (Illinois) | 4,749.21 mi (7,643.11 km) |
| Olbia to Davenport (Iowa) | 4,864.98 mi (7,829.43 km) |
| Olbia to Davidson (North Carolina) | 4,689.39 mi (7,546.85 km) |
| Olbia to Davie (Florida) | 5,051.77 mi (8,130.03 km) |
| Olbia to Davis (California) | 6,144.41 mi (9,888.47 km) |
| Olbia to Dayton (Nevada) | 6,037.25 mi (9,716.01 km) |
| Olbia to Dayton (Ohio) | 4,668.45 mi (7,513.15 km) |
| Olbia to Daytona Beach (Florida) | 4,959.64 mi (7,981.77 km) |
| Olbia to De Pere (Wisconsin) | 4,643.84 mi (7,473.53 km) |
| Olbia to De Witt (New York) | 4,193.49 mi (6,748.78 km) |
| Olbia to Dearborn (Michigan) | 4,526.65 mi (7,284.94 km) |
| Olbia to Dearborn Heights (Michigan) | 4,529.21 mi (7,289.06 km) |
| Olbia to DeBary (Florida) | 4,983.82 mi (8,020.68 km) |
| Olbia to Decatur (Alabama) | 5,006.68 mi (8,057.47 km) |
