It's the total activity distance on the stats field of connect. Today however I got 2 PBs, accepted them on the web page and now all my stats have disappeared from that tab and I get an error has occurred message. I tried reinstalling Connect but got the same error message.
It's a Sumsung Galaxy s7 edge, when I go into the profile page and then the stats tab, the error message occurs. The error occurred after I got a new PB. Yes it is recorded correctly on the website.