My calcs suggest a glide range of 16nm......at 65 kts which from memory is best glide in a PA28-161 and ~600fpm fpm decent.
(9000/600 = 15min; 0.25*65nm = 16.25)
Of course, knocking off a few nm for a head wind and a few more for initial re-starting and messing around below 2000' could easily put glide at <10nm.