The SR-71's maximum crusing altitude was just shy of 100,000 feet, about 18.9 miles. It's maximum speed exceeded 3.3 times the speed of sound, around 2511 miles per hour. Both of these stats were incrediable for the time it was created.
2200 mph
Stratosphere
the stratosphere!
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
It was designed to be a long range recon jet. but it really deepens on how fast its flying and at what altitude.
They can fly at over Mach 3.5 .
depends on the altitude, payload, and how fast its flying
In 1990 the SR-71 went from the West Coast to the East Coast in 68 minutes and 17 seconds. That's as close as I could get to Los Angeles to New York.
they fly on and on on and on on and on on and on on and on on and on on and on on and on! they fly forever!
The Blackbird
No. Astronauts fly at least 100km above the earth. The highest altitude they'll admit to flying the SR-71 is 90,000 feet--less than 28km.
The SR-71 Blackbird can fly way much more higher than Missiles. So the SR-71 Blackbird win.