Activity distance nearly a quarter mile short in Connect app

I think similar questions to this have been asked but I can't find anything exactly the same.

So, I did a pot-injury run this morning. My F6X Pro measured 2.1 miles which is about right. However, when the run uploaded to the Connect app it came out as 1.7 miles. That's way short.

I've not encountered this before and as I was doing 4 minutes of running with a minute of walking (repeat to end) I thought it was only the running parts that were getting measured.

The watch has also been off for four weeks but even if it had lost GPS data and was scrambling to fix at the the start surely both distances would be similar.

Any ideas? Thank you.

0 martin_s_15371 over 4 years ago

Forgot to put that it is 2.1 miles in Strava so Connect seems to be at fault.

0 gaijin over 4 years ago

If you have Auto Pause turned ON, try turning it OFF.

HTH

0 martin_s_15371 over 4 years ago in reply to gaijin

Auto pause was already off.

0 martin_s_15371 over 4 years ago

Further to this today's run on the exact same route was way off.

Watch said I hit 1 mile about 0.35 of a mile too early. It then went on to measure the run at 2.47 miles. 0.37 mile too long.

This time though both the watch and the app showed the same data. Checking on Strava it measure correctly at 2.1 miles.

Could this be due to my watch being off for four weeks and needing a GPS soak?