| Simi Valley to Darby (Pennsylvania) | 2,404.35 mi (3,869.42 km) |
| Simi Valley to Dardenne Prairie (Missouri) | 1,580.00 mi (2,542.77 km) |
| Simi Valley to Darien (Illinois) | 1,742.25 mi (2,803.87 km) |
| Simi Valley to Davenport (Iowa) | 1,606.34 mi (2,585.16 km) |
| Simi Valley to Davidson (North Carolina) | 2,138.07 mi (3,440.89 km) |
| Simi Valley to Davie (Florida) | 2,351.24 mi (3,783.95 km) |
| Simi Valley to Davis (California) | 339.69 mi (546.67 km) |
| Simi Valley to Dayton (Nevada) | 347.92 mi (559.92 km) |
| Simi Valley to Dayton (Ohio) | 1,931.07 mi (3,107.76 km) |
| Simi Valley to Daytona Beach (Florida) | 2,227.30 mi (3,584.49 km) |
| Simi Valley to De Pere (Wisconsin) | 1,769.53 mi (2,847.78 km) |
| Simi Valley to De Witt (New York) | 2,353.56 mi (3,787.68 km) |
| Simi Valley to Dearborn (Michigan) | 1,989.68 mi (3,202.07 km) |
| Simi Valley to Dearborn Heights (Michigan) | 1,986.44 mi (3,196.87 km) |
| Simi Valley to DeBary (Florida) | 2,221.59 mi (3,575.30 km) |
