What's the all-important figure: Maximum flight distance? In practice though, it's maximum minutes as many planes will be taxiing then need to sit on the tarma

What's the all-important figure: Maximum flight distance? In practice though, it's maximum minutes as many planes will be taxiing then need to sit on the tarmac for quite a while waiting for take-off, and taxiing and loitering after landing till it can reach the terminal.