Re: Fake (news) data ?
Fake data to strava is relatively simple I believe. Cyclists have been accused of fiddling with data from their rides to appear faster than they were. These are just text files and would be fairly easy to parse and modify.
GPS accuracy also is really not ALWAYS that great so I would not be at all surprised if it was sometime +/- 50m if the GPS device only has a poor lock on satellites - for example if worn on a wrist while running or sailing!