Research, training,
and the start line.
Sierra has always been drawn to human limits and the power of the mind. Before running, she spent eight years as a collegiate and semi-professional rugby player — constantly pushing herself physically and mentally to find out what she was truly capable of.
With a master's degree in Sport and Performance Psychology, she has provided resilience and mental skills training for athletes, US Army soldiers and leadership, and now brings that same work to the University of Alabama.
She started running at the end of 2021. Since then she has run eight marathons — including two World Marathon Majors — a handful of half marathons, and recently started racing trails and ultra distance. Through her own racing, her work has evolved into a deeper commitment to helping more women get to the start line and shatter their goals when they get there.
In September 2025, she launched The Run, Shattered Podcast — long-form mental performance conversations for marathon and ultra runners. The work she does in the field and on the course feeds directly back into every episode.
Sierra Morris · Boston Marathon 2025