SR71 Facts: 29 Details That Might Surprise You | Military ...
03/01/2019 · The SR71 reached a maximum speed in excess of Mach or above 2,500 mph. The SR71 Blackbird cruising speed was Mach or roughly 2,450 mph. On the 27th and 28th of July, 1976, and SR71A set speed and altitude records (Altitude in Horizontal Flight: 85, ft. and Speed Over a Straight Course: 2, mph).