- Tim Minnick
- 77:65 year(s)
- United States (Leander)
The oldest active fitness instructor (multiple disciplines) is Tim Minnick (USA, b. 28 October 1942), who is 77 years 65 days, as verified in Leander, Texas, USA, on 31 December 2019.
Tim didn't receive his personal training certification until the age of 74.