Vonn returned to the skiing circuit in December at the age of 40 and she wasn’t initially planning on racing at the worlds.

The downhill course at the Alpine skiing world championships would have been a challenge for Lindsey Vonn's aching legs ... I have my jacket on. I have all my pads on. I'm trying different boots ...

Vonn returned to the skiing circuit in December at the age of ... runs because I’m testing things,” she said. “I have my jacket on. I have all my pads on. I’m trying different boots ...

United States' Lindsey Vonn speeds down the course during an alpine ski, women's World Championship ... m testing things,” she said. “I have my jacket on. I have all my pads on.