It's not a IAAF allowable qualifying event - point to point and drops > 138ft.
From the qualification manual:-
"Marathons
Performances for qualifying purposes may only be achieved on a course measured by an IAAF/AIMS Grade “A” or “B” International Road Race Course Measurer with the measurement certificate established no more than 5 years before the date of the race.
For entry standards the overall decrease in elevation between the start and the finish shall not exceed 1:1000, i.e. 1m per km.
For World Rankings in case of performances achieved on courses with a drop in elevation which exceeds 1:1000 a correction will be made in the result score from which points will be deducted depending of the drop."