This thing shows up every 3 or 4 months or so on my news feed, and I really don't set a lot by it.

Sure, a +65 year old pulling better than 20 mile rides sounds impressive on the surface, but there's no data showing how these rides are accomplished.

A ride day for me that's over 20 miles includes coffee breaks and rest stops, stops for taking pictures, etc etc.
I think a better barometer of the differences between age groups should center around time spent on the bike.
To me it really doesn't matter.
The important data to me personally is speed average, and total daily distances.

-D.S.