Galaxy Watch 4 not tracking run correctly

[Members_SKEq8g2]

Hi. My galaxy watch has started to track my treadmill runs slower than normal.  In the past my treadmill and watch were a few seconds out.  Now my watch starts off a min and a half out and by 5k its 4 mins out. Ive run a mile for the last four years at 9 mins 48.   My watch its telling me its now 11. 35.   Ive tried positing it differently on my wrist, turning on and off, wiping clean but still no joy. 

[adamonsscommunity]

Try Gear Tracker II - it's a much-better alternative to the Samsung Health running app.  Allows you to calibrate your treadmill runs and adjust the distance if it's off.

https://play.google.com/store/apps/details?id=com.limegreenv.geartracker