How fast does an sr-71 blackbird go?

The Lockheed SR-71 Blackbird is officially recognized as the world's fastest air-breathing manned aircraft; it still carries records in speed, altitude, and the duration of flight time attained during its long service with the United States Air Force (USAF), the Central Intelligence Agency (CIA), and NASA. During tests, an SR-71 reached and recorded top speeds in excess of Mach 3.2—equivalent to more than 3,500 kilometers per hour (2,200 mph or more than 1.7 Mach in most commonly known terms of Mach speed calculations), and 2,124 miles per hour at flight ceiling).