| Sintra to Dardenne Prairie (Missouri) | 4,219.60 mi (6,790.78 km) |
| Sintra to Darien (Illinois) | 3,996.80 mi (6,432.23 km) |
| Sintra to Davenport (Iowa) | 4,124.06 mi (6,637.04 km) |
| Sintra to Davidson (North Carolina) | 3,837.82 mi (6,176.37 km) |
| Sintra to Davie (Florida) | 4,124.89 mi (6,638.37 km) |
| Sintra to Davis (California) | 5,587.09 mi (8,991.55 km) |
| Sintra to Dayton (Nevada) | 5,468.14 mi (8,800.12 km) |
| Sintra to Dayton (Ohio) | 3,875.70 mi (6,237.34 km) |
| Sintra to Daytona Beach (Florida) | 4,057.32 mi (6,529.63 km) |
| Sintra to De Pere (Wisconsin) | 3,923.44 mi (6,314.16 km) |
| Sintra to De Witt (New York) | 3,401.72 mi (5,474.53 km) |
| Sintra to Dearborn (Michigan) | 3,757.55 mi (6,047.18 km) |
| Sintra to Dearborn Heights (Michigan) | 3,760.45 mi (6,051.86 km) |
| Sintra to DeBary (Florida) | 4,080.15 mi (6,566.36 km) |
| Sintra to Decatur (Alabama) | 4,175.98 mi (6,720.58 km) |
