Editing Boston Marathon (section)

====Heartbreak Hill====
Heartbreak Hill is an ascent over {{convert|0.4|mi|m|-2}} between the 20- and 21-mile (32- and 34-km) marks, near [[Boston College]]. It is the last of four "[[Newton, Massachusetts|Newton]] hills", which begin at the {{convert|16|mi|km|adj=on}} mark and challenge contestants with late (if modest) climbs after the course's general downhill trend to that point. Though Heartbreak Hill itself rises only {{convert|88|ft|m}} vertically (from an elevation of {{convert|148|to|236|ft|m}}),<ref name="program"/> it comes in the portion of a marathon distance where muscle [[glycogen]] stores are most likely to be depleted—a phenomenon referred to by marathoners as "[[Hit the wall|hitting the wall]]".

It was on this hill that, in 1936, defending champion [[John A. Kelley|John A. "Johnny" Kelley]] overtook [[Ellison Brown|Ellison "Tarzan" Brown]], giving him a consolatory pat on the shoulder as he passed. This gesture renewed the competitive drive in Brown, who rallied, pulled ahead of Kelley, and went on to win—thereby, it was said, breaking Kelley's heart.<ref name=Vega/><ref name=memorable/>