If you read the book you will get all the details of the trek the crew tried to make to save them selves but it was just to far in the wrong direction they went north towards the coast .If they had gone SW it would have been 130 miles to El Gezira Oasis 35 miles of which were sand dunes , while going north it was between 201 to 218 miles to the nearest Oasis's , Sgt Ripslinger walked roughly 80 miles before he died then Sgt Shelly walked on another 7 miles or so before he died since this is the locations of their bodies while enduring 130 f day time temps and freezing cold at night .
Sgt Moore would have had to walk 80 miles further of which 60 miles were dunes to reach Gialo Oasis.< these are the figures in the book I know they dont add up > with no food,water, or shelter .
their escape map covered only the area 320 miles from the coast they parachuted almost 440 miles south of the coast.