He played for the Italy men's national ice hockey team at the 1984 Olympics in Sarajevo, appearing in three contests. Tancon also represented his country at the B and C Pool World Championships on six occasions.
Tancon enjoyed a long club career, as it spanned from 1975 to 2000. He spent much of his career playing for HC Alleghe, but also had stints with SHC Fassa, HC CourmAosta, and HC Feltre in the Italian Serie A. These teams also competed in the Alpenliga in some years.