I dunno, in 27 years I'll be 69. And I've still got 2 years of uni left to go :((
To be honest I spent almost 20 years on the factory floor. I moved into the engineering department at 37 and graduated with a 2:1 Bachelor's Degree in Mechanical Engineering at 42 (all payed for by the company). I did the degree on day release so it took 5 years.
So you could say I got here in 16 years.