When Mirna Valerio first began running ultramarathons, she immediately got a lot of attention, but not for the reasons you might expect. Because of her body size, she didn’t fit the accepted image of a long-distance runner. Her story isn’t about an average athlete trying to get better. It’s about what happens when people assume that someone can’t possibly be an athlete because of the way she looks—and then how they how they react when she takes on enormous challenges and finds a way to keep going and going. This episode kicks off the second season of the Athletes Unfiltered podcast from Strava.