| Simi Valley to Dover (New Hampshire) | 2,615.37 mi (4,209.03 km) |
| Simi Valley to Dover (New Jersey) | 2,436.22 mi (3,920.71 km) |
| Simi Valley to Dover (Ohio) | 2,074.83 mi (3,339.12 km) |
| Simi Valley to Downers Grove (Illinois) | 1,740.89 mi (2,801.69 km) |
| Simi Valley to Downey (California) | 42.01 mi (67.60 km) |
| Simi Valley to Dranesville (Virginia) | 2,297.66 mi (3,697.73 km) |
| Simi Valley to Draper (Utah) | 572.57 mi (921.46 km) |
| Simi Valley to Drexel Heights (Arizona) | 468.55 mi (754.06 km) |
| Simi Valley to Drexel Hill (Pennsylvania) | 2,401.93 mi (3,865.53 km) |
| Simi Valley to Duarte (California) | 46.21 mi (74.36 km) |
| Simi Valley to Dublin (California) | 296.22 mi (476.72 km) |
| Simi Valley to Dublin (Georgia) | 2,059.04 mi (3,313.70 km) |
| Simi Valley to Dublin (Ohio) | 1,987.08 mi (3,197.89 km) |
| Simi Valley to Dubuque (Iowa) | 1,612.73 mi (2,595.43 km) |
| Simi Valley to Duluth (Georgia) | 1,969.12 mi (3,168.99 km) |
