HRM distance not correct.

Since I have bought the HRM pro monitor and added it to the Bluetooth on my venu sq2 the distance I’m running is incorrect to routes I have done previous. I ran the same 5.6km run other day with the HRM connected and it came up as 4.99km. Has anyone else had the same issue?

0 Adam-1972 3 months ago

What are your settings regarding HRM sensor on your watch?
I'm asking about distance, is it "always" or "indoor only"?
Did you do HRM calibration doing couple runs outside with GPS?

0 Grumpy from dawn till dusk 3 months ago in reply to Adam-1972

4451267:

Adam-1972 said:
I'm asking about distance, is it "always" or "indoor only"

That is the crucial point!

HRM Pro can be used INSTEAD of GPS for distance calculation, but it is way more inaccurate. Please check, if „distance“ is set to „indoor only“ in sensors settings. Otherwise all of your upcoming runs with that strap will have incorrect distances.

0 4451267 3 months ago in reply to Adam-1972

So i have the pace and distance set to always. I haven’t done the calibration as I didn’t know I need to. How is this done? Thanks

0 Adam-1972 3 months ago in reply to 4451267

First you need to read manual for your watch and HRM.
Second follow the instruction.
https://www8.garmin.com/manuals/webhelp/GUID-C3225F6F-DF15-4404-9E20-05C4FDCD1207/EN-US/GUID-D65286FD-BE70-4850-9C08-6BC0B21A30AD-homepage.html

Search for calibration.

0 Grumpy from dawn till dusk 3 months ago in reply to 4451267

4451267 said:
I haven’t done the calibration as I didn’t know I need to

My STRONG recommendation is: DON'T let it set to "always"!

Change the setting to "indoor only".

Otherwise, all your distances with outdoor runs will be rubbish. Trust me, the GPS is WAY more accurate!

So to repeat: Set it to "indoor only" and btw the calibration will happen automatically over the time, when you go running outside with GPS and your HRM Pro will then "learn" how your movement matches to the speed and distance measured by GPS. But once again, DON'T let the setting set to "always".

0 Adam-1972 3 months ago in reply to Grumpy from dawn till dusk

Interesting is that this setting is by default set to "indoor only", that mean, he or she already changed it to "always" doesn't know what it mean and now complain.