| Olbia to Decatur (Georgia) | 4,918.52 mi (7,915.59 km) |
| Olbia to Decatur (Illinois) | 4,867.53 mi (7,833.53 km) |
| Olbia to Deer Park (New York) | 4,149.45 mi (6,677.89 km) |
| Olbia to Deer Park (Texas) | 5,587.22 mi (8,991.76 km) |
| Olbia to Deerfield (Illinois) | 4,726.56 mi (7,606.67 km) |
| Olbia to Deerfield Beach (Florida) | 5,034.39 mi (8,102.06 km) |
| Olbia to Defiance (Ohio) | 4,615.91 mi (7,428.59 km) |
| Olbia to DeForest (Wisconsin) | 4,743.69 mi (7,634.23 km) |
| Olbia to DeKalb (Illinois) | 4,773.14 mi (7,681.63 km) |
| Olbia to Del Aire (California) | 6,295.54 mi (10,131.69 km) |
| Olbia to Del City (Oklahoma) | 5,419.32 mi (8,721.55 km) |
| Olbia to Del Rio (Texas) | 5,854.07 mi (9,421.22 km) |
| Olbia to DeLand (Florida) | 4,976.14 mi (8,008.33 km) |
| Olbia to Delano (California) | 6,222.70 mi (10,014.47 km) |
| Olbia to Delaware (Ohio) | 4,599.65 mi (7,402.42 km) |
