That was over 45 years ago in 1976.
Today he is 84, and has starred in 95 movies in total, 77 since Marathon Man was released.
In Marathon Man, I think Dustin Hoffman looks:
Marathon Man scores 7.3 out of 10 on The Movie Database.
Dustin Hoffman's first acting role was as 'Zoditch' in The Journey of the Fifth Horse, released in 1966 when he was 29.