investigator, I think wrt to histograms of pros, strength is in the numbers. No matter who you pull you are going to have a unimodal distribution, so pull a bunch.
PS how are you pulling the data and generating the histograms?
The data source is the .tcx files representing all of RY's Strava activities (plus the 32 mi deleted one from your fake account). Google drive links are in the doc. Pulled data with this: https://chrome.google.com/webstore/detail/strava-export-gpx-track/kdemfmhkoncmbcphejembfngiihppkei?hl=en
Histograms and analysis with GoldenCheetah. Open source software, powerful, but hard to use. And some bugs apparently.