Distance from ZIP 20857 to 20855
Rockville, MD → Derwood, MD
Straight Line Distance
3 miles
6 km
Great circle distance between ZIP code centers
Driving (est.)
≈ 4min
At 90 km/h average. Actual road distance is typically 15-30% longer.
Flying (est.)
≈ 45min
At 850 km/h cruise plus takeoff and landing.
Route Map
Frequently Asked Questions
The straight-line distance between ZIP code 20857 (Rockville, MD) and 20855 (Derwood, MD) is 3 miles (6 km).
Driving takes approximately 4min at an average speed of 90 km/h. Actual road distance is typically 15-30% longer than the straight line.