He is commonly referred to by the name Trace, alluding to the "III."
In December 2011, Smith obtained 5th place with 46.68 points in a FIS competition held in Val Saint Come, Canada. In December 2012, he got the 11th place after two runs in a FIS slalom competition held in Panorama, Canada. In February 2013, Smith placed 36th in slalom at the FIS Alpine World Ski Championships 2013 in Schladming, Austria.
Smith attends Dartmouth College in Hanover, New Hampshire, where he is studying economics and government.
He competes for the Dartmouth Big Green skiing and sailing teams. Smith resides in Dedham, Massachusetts, with his father, mother and younger twin siblings.
He attended Burke Mountain Academy, in East Burke, Vermont, the first sports academy in the country well known for its successful alumni such as Mikaela Shiffrin. In the summer, Smith sails competitively for the Beverly Yacht Club in Marion, Massachusetts.
Smith grew up racing at Stratton Mountain in Vermont as a member of the Stratton Training Center before attending Burke Mountain Academy.