The American has been suffering from an intestinal problem which hospitalised her earlier in the month and will skip Sunday's slalom in a bid to conserve energy.
"I'm not going to lie — it was really bad. It was definitely the most pain I've been in, in my life," said Vonn. "I'm not the kind of person who goes to the hospital."
Vonn missed races due to the illness but having now got it under control with antibiotics, she returned to training last week in Vail and is ready to, at least, race in the giant slalom at her home event.
"I'm not really sure what to expect, but I'm excited to be able to race in my home state in front of the home crowd," she said. "Racing, to me, is the fun part. I'm not exactly expecting much from the results."