Just over 10 years earlier, Courtney Dauwalter sat alone and dejected at an aid station after dropping out of her first 100-mile race, Run Rabbit Run,, external in Steamboat Springs, Colorado.
The remote location meant no easy escape - no simple way out. She would have to sit for hours watching others pass before the aid station closed and she could get a ride to the finishing area.
"When it started getting physically difficult, almost immediately my headspace went really negative, and I just whirlpooled down into it," says Dauwalter.
"Any runner will tell you that a 'did not finish' is a crushing experience. I couldn't believe I'd given up so quickly and quit something I'd started."
Alone and hurting, watching others gritting it out, she searched her mind for some resolve.
"I decided I was going to be a person who could finish 100 miles. I just had to make a new plan and figure out how. Later that day I signed up for a 100-mile race one year from then."