In the early days of hockey it was not uncommon for a forward or defenceman to play the entire 60 minutes. Benches were smaller in those days.
We're talking like the 1910s, early 1920s here And-O.
When do you wanna make a cutoff for minutes played in the modern era. That is the question. But if you wanna go back to the start of the NHL in 1917, I'm sure you'll find quite a few 60 minute men.