It depends where from
Nobody really knows because the black bird wasn't ment to travel.
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.
10 - 19 days
Less than 50 minutes but not much.
How long does it take to fly from North Carolina to Cancun Mexico?
long
about how long would it take to walk from east Texas coast to Mexico citey
It took 68 min 17 sec.
Depending if you travel from pole to pole or aroung the equator, it takes just under 11 hours from pole to pole. The earth is not a perfect sphere so pole to pole is a little bit shorter distance versus going around the equator.That is at MACH 3.4 (2,200 MPH) and if it could do the trip without having to stop for fuel.
about how long would it take to walk from east Texas coast to Mexico citey
How many miles is it from Arizona to Mexico?
Fast new way of reconnaissance a quick way to get in and get out safely and take away the need of fighter protection.