When taking on something bigger than yourself, Six Star World Marathon Majors finisher Dorina Carrillo has two pieces of advice. Make sure it's something you're passionate about and do it with all your heart. Dorina first got into running in 2012 as a way to do something hard while her mom was battling breast cancer. After her mom's passing, she stepped away from the sport. But in 2016, a friend helped her find her way back. What started as a personal challenge turned into something much big...