Back in 2015, prior to her first go at a World Championships, Rosie Brennan was asked this: What’s your biggest motivation while racing?. “I am most motivated by wanting to show that my hard work was worth it, that I did everything I could to go as fast as I could,” Brennan replied at the time. She was twenty six years old then, and now at 30 years old, the Park City native grinds away,...