It's my understanding that humans, being bipedal rather than quadrupedal, are more efficient runners[0]. Quadrupeds have the advantage over short distances [like dwarves, they are natural sprinters [1]], but their metabolism is not suited to endurance running. They lack sweat glands necessary to cool their bodies over long periods of exertion as well.
There are hypotheses of early humans hunting by purely chasing down their prey during the hottest part of the day and into hyperthermia.[2]
[0] https://en.wikipedia.org/wiki/Endurance_running_hypothesis
[1] https://www.youtube.com/watch?v=L4qZrPX60bw
[2] https://en.wikipedia.org/wiki/Persistence_hunting#In_humans