Prior to becoming a road cyclist, Roth also competed in the junior levels in mountain-biking and cyclo-cross; he was national junior cyclo-cross champion in 2000.

[3] Born in Kitchener, Ontario, Roth competed as a professional from 2002, making his début with the Sympatico–Jet Fuel Coffee team.

[5] Having featured highly in several North and Central American races during his career, Roth won his first UCI Europe Tour race in April 2012, by winning the Tro-Bro Léon race.

Roth soloed to victory in Lannilis after catching the breakaway and went clear of them,[6] finishing thirteen seconds clear of his nearest rival, Benoit Jarrier of Véranda Rideau U.

[9] Roth also won the 2012 Canadian National Road Race Championships.