The Lockheed-Martin SR-71 Blackbird's top speed was Mach 3.5, or 3.5 times the speed of sound. that is 2664 miles per hour and 4287 kilometres per hour
3.5
2200 mph
About 3 times the speed of sound. (3 mach)
Black
The SR-71 Blackbird is 2,193 miles per hour fast or Mach 3, three times faster than the speed of sound.
2193 mph
Stratosphere
the stratosphere!
The SR-71 Blackbird was introduced into service in 1966.
It is the Lockheed SR-71 "Blackbird", a reconnaissance aircraft.
SR71 Blackbird Model M-21: maximum speed: 2211miles/h Generally, the given answer for all models of the SR71 is: "In excess of Mach 3", or more than three times the speed of sound. see related links below for more info
No it just flew very high to avoid radar.