| Simi Valley to Duluth (Minnesota) | 1,631.12 mi (2,625.03 km) |
| Simi Valley to Dumas (Texas) | 954.42 mi (1,536.00 km) |
| Simi Valley to Dumont (New Jersey) | 2,465.50 mi (3,967.84 km) |
| Simi Valley to Duncan (Oklahoma) | 1,185.37 mi (1,907.66 km) |
| Simi Valley to Duncanville (Texas) | 1,261.30 mi (2,029.86 km) |
| Simi Valley to Dundalk (Maryland) | 2,342.74 mi (3,770.27 km) |
| Simi Valley to Dunedin (Florida) | 2,158.12 mi (3,473.15 km) |
| Simi Valley to Dunkirk (New York) | 2,188.00 mi (3,521.25 km) |
| Simi Valley to Dunmore (Pennsylvania) | 2,379.85 mi (3,829.99 km) |
| Simi Valley to Dunwoody (Georgia) | 1,960.73 mi (3,155.49 km) |
| Simi Valley to Durango (Colorado) | 643.27 mi (1,035.24 km) |
| Simi Valley to Durant (Oklahoma) | 1,276.20 mi (2,053.84 km) |
| Simi Valley to Durham (North Carolina) | 2,239.29 mi (3,603.79 km) |
| Simi Valley to Dyer (Indiana) | 1,764.55 mi (2,839.76 km) |
| Simi Valley to Dyersburg (Tennessee) | 1,657.45 mi (2,667.41 km) |
