| Olbia to Dover (New Jersey) | 4,201.00 mi (6,760.85 km) |
| Olbia to Dover (Ohio) | 4,520.80 mi (7,275.53 km) |
| Olbia to Downers Grove (Illinois) | 4,748.60 mi (7,642.13 km) |
| Olbia to Downey (California) | 6,286.20 mi (10,116.67 km) |
| Olbia to Dranesville (Virginia) | 4,396.19 mi (7,074.99 km) |
| Olbia to Draper (Utah) | 5,717.20 mi (9,200.94 km) |
| Olbia to Drexel Heights (Arizona) | 6,126.19 mi (9,859.16 km) |
| Olbia to Drexel Hill (Pennsylvania) | 4,267.84 mi (6,868.43 km) |
| Olbia to Duarte (California) | 6,267.66 mi (10,086.83 km) |
| Olbia to Dublin (California) | 6,197.06 mi (9,973.20 km) |
| Olbia to Dublin (Georgia) | 4,906.88 mi (7,896.86 km) |
| Olbia to Dublin (Ohio) | 4,609.58 mi (7,418.41 km) |
| Olbia to Dubuque (Iowa) | 4,829.20 mi (7,771.84 km) |
| Olbia to Duluth (Georgia) | 4,902.02 mi (7,889.04 km) |
| Olbia to Duluth (Minnesota) | 4,705.86 mi (7,573.35 km) |
