According to the theory of general relativity, the speed needed to escape a black hole’s gravitational pull is the same as the speed of light. So, to escape a black hole, you would have to travel at the speed of light, which is about 299,792,458 meters per second in a vacuum.
That’s once past the event horizon, Nolan wasn’t even close to the event horizon.you could see the bits of metal from the ship floating past him and they weren’t moving fast.