| Simi Valley to Decatur (Alabama) | 1,802.69 mi (2,901.15 km) |
| Simi Valley to Decatur (Georgia) | 1,963.81 mi (3,160.44 km) |
| Simi Valley to Decatur (Illinois) | 1,680.23 mi (2,704.07 km) |
| Simi Valley to Deer Park (New York) | 2,501.39 mi (4,025.60 km) |
| Simi Valley to Deer Park (Texas) | 1,417.28 mi (2,280.89 km) |
| Simi Valley to Deerfield (Illinois) | 1,752.69 mi (2,820.68 km) |
| Simi Valley to Deerfield Beach (Florida) | 2,354.18 mi (3,788.69 km) |
| Simi Valley to Defiance (Ohio) | 1,925.68 mi (3,099.09 km) |
| Simi Valley to DeForest (Wisconsin) | 1,690.42 mi (2,720.47 km) |
| Simi Valley to DeKalb (Illinois) | 1,704.88 mi (2,743.75 km) |
| Simi Valley to Del Aire (California) | 32.49 mi (52.28 km) |
| Simi Valley to Del City (Oklahoma) | 1,208.51 mi (1,944.92 km) |
| Simi Valley to Del Rio (Texas) | 1,100.48 mi (1,771.05 km) |
| Simi Valley to DeLand (Florida) | 2,220.47 mi (3,573.50 km) |
| Simi Valley to Delano (California) | 107.64 mi (173.24 km) |
