There seems to be a bug in the distance displayed in the activity details on the Healthmate web dashboard. I have two tracked runs, where the distance displayed is much shorter than in the Healthmate iOS app. It also shows the distance in meters instead of kilometres.
My guess is that the web dashboard cannot show runs made using the connected GPS properly, because the walks I have tracked without GPS have the correct distance. It still shows the distance in meters though.
In general, I think you should give the activity details on the web dashboard a brush up. It can only show half of the details I have in my iOS app.