25 KM by air. And now they will have to move everyone and everything out of Kabul or leave them anyway. Biden was too lazy or unaware (or indifferent) to prepare.
They do seem to be removing around 20,000 people a day already for several days. How many do they need to move. Also, if we did not have the KIA airport, how would we have transported quantities of people out to Bagram? Helicopter pick up points would have had to be arranged, not places for planes that can carry hundreds at a time like KIA.