The Human Potential Running Series

The Human Potential Running Series (HPRS) is Colorado's largest series of ultra marathons and the 5 th largest ultra series in North America. Colorado is home to the 2 nd most ultra marathon finishers of the 50 United States. Established in 2014, HPRS is dedicated to helping athletes discover what it is to be human, through athletic endeavors that specifically challenge each runner physically and mentally.