| Sintra to Decatur (Georgia) | 4,067.50 mi (6,546.00 km) |
| Sintra to Decatur (Illinois) | 4,099.22 mi (6,597.06 km) |
| Sintra to Deer Park (New York) | 3,319.83 mi (5,342.75 km) |
| Sintra to Deer Park (Texas) | 4,757.11 mi (7,655.84 km) |
| Sintra to Deerfield (Illinois) | 3,978.29 mi (6,402.43 km) |
| Sintra to Deerfield Beach (Florida) | 4,108.32 mi (6,611.70 km) |
| Sintra to Defiance (Ohio) | 3,840.46 mi (6,180.62 km) |
| Sintra to DeForest (Wisconsin) | 4,015.35 mi (6,462.08 km) |
| Sintra to DeKalb (Illinois) | 4,026.76 mi (6,480.45 km) |
| Sintra to Del Aire (California) | 5,665.24 mi (9,117.33 km) |
| Sintra to Del City (Oklahoma) | 4,653.95 mi (7,489.81 km) |
| Sintra to Del Rio (Texas) | 5,055.13 mi (8,135.44 km) |
| Sintra to DeLand (Florida) | 4,073.34 mi (6,555.41 km) |
| Sintra to Delano (California) | 5,617.36 mi (9,040.27 km) |
| Sintra to Delaware (Ohio) | 3,807.01 mi (6,126.80 km) |
