Watch: The Ultra Addict with Courtney Dauwalter

In 2018, Courtney Dauwalter battled for two days and 205 miles on the steep, dry Tahoe Rim Trail. Lack of sleep, race mishaps and a relentless competitor pursued her as she was pushing her limits, running towards the overall victory. You can learn a lot about yourself when a race goes well, but you can learn even more when it all goes sideways.