In this episode of The Mountain Life Mirna Valerio, an American runner who advocates for inclusion in the running community towards people who do not have stereotypically lean and muscular bodies. Mirna is National Geographic 2018 Adventurer of the Year ultramarathon runner and she is a self-described “big girl”. She has written a book, A Beautiful Work In Progress , a prejudice-busting body-positive memoir told with raw honesty, an adventurous spirit, and a sharp sense of humor. REI Presents: