Funk, who was usually called by his nickname "Lenz", represented West Germany in 225 international games, including three Olympic Winter Games - Grenoble 1968, Sapporo 1972 and Innsbruck 1976 - and 13 International Ice Hockey World Championships between 1966 and 1979, including eight in the top division.

Playing with the number nine, he was part of the team which won the Olympic bronze medal in 1976.

He contributed two goals and even points in five games at the tournament.

In domestic play he won three National Championships, 1966 with his hometown team Bad Tolz and two with Berliner SC  in 1974 and 1976.

Later, he worked as coach and manager at different clubs including Bad Tolz, Eisbaren Berlin and Preussen Berlin.

His two sons, Lorenz Funk Jr and Florian Funk also played top-level hockey in Germany.