That depends greatly on the age/design of the car/truck. I’ve driven some that barely let you shift with the pedal in the floor, or like my new car, you barely even touch it and the clutch is slipping. My first car was somewhere in the middle; a few inches to fully disengage, with a couple to spare.

As with most things that you have to actually interact with, you have to get a feel for it before you’ll have perfect stop/starts.