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15.19: LTH still doesn't sync with GC

I just did a run with the 15.19 update and the watch detected a new lactate threshold which I accepted. However, after syncing with Garmin Connect, the new threshold did not show up in the app.

So as far as I my case is concerned we are back to square one with this whole LTH mess.

Im still firmly convinced this has something to do with the presence of both a general heart rate and various "sport heart rates" for running, cycling and swimming on the watch.

I noticed that on the watch, the new threshold was automatically entered to the "Sports Heart Rate" for "Running", but the general LTH failed to update on the watch and still showed the old value. What's curious, the max heart rate is correctly updated both in the "running" and in the general category, but the LTH is not.

Since Garmin Connect doesn't even seem to be able do distinguish between or display different heart rates / LTHs for different sports, it takes the data from the general HR / LTH, which is not being properly updated on the watch.

I did an experiment now and removed the running, cycling and swimming heart rate from the watch, leaving only the general one. I will observe what happens the next time I get a LTH update.

Anyone else is experiencing this problem even after updating to 15.19?

Top Replies

8980788 10 months ago in reply to neurogeek +0 verified

Same problem for me. I also wear a chest strap. I’ve never gotten a LTHR.
Garmin-Sierra 5 months ago +1 verified

All,

This disruption of accepted LTH values not syncing to Garmin Connect should be fixed in Public Beta Version 17.21.

If future LTH values are still not appearing in GC, please start a new thread.
9610916 11 months ago +6

I can't believe we are back to square one with this:

2022: LTH transfer to GC doesn't work for most users, after many months Garmin supposedly fixes it

Jan 2023: Turns out that in the process of…
global_local 11 months ago +1

Yes, same problem here. Last record was at 12. May, on SW 15.15. Next week with SW 15.17, and now on SW 15.19 I got it on the watch, but no record on garmin connect. Really bad.
9610916 11 months ago in reply to global_local +1

Thank you for confirming I am not alone with this. Just to be sure I understood correctly, the GC synchronisation worked with 15.12 - 15.17 and stopped working on 15.19? I have read a similar report from…

All Replies

0 global_local 10 months ago in reply to Cooad

Did a threshold run today. Got an update for a LTH. Saved it. Have it on the watch but not in GC on the phone and web.

Any comments Garmin???

0 ovekvam 10 months ago

Did a run today, and got a new threshold heart rate and threshold pace for running. It is showing in the watch, but not in the Garmin cloud. The cloud does however show my new race prediction correct, which was also updated today. And my running VO2Max is completely missing for running, but showing under "all activities".

I have 15.19 on the watch, and use Garmin Connect web page.

0 AKL 10 months ago

I did a run earlier with 255M (software version 15.19) and HRM strap. New LT HR & pace shown and accepted on watch. Both values synced and shown in Garmin Connect.

0 ovekvam 10 months ago in reply to AKL

Do you see your new values on this page:
connect.garmin.com/.../last_six_months

0 AKL 10 months ago in reply to ovekvam

Yes I can see the new values on the "6 months" page in GC/Running/Lactate Threshold (as well as 7 days, 4 weeks and 1 year)

0 ovekvam 10 months ago in reply to AKL

Interesting. Something must be different, since it is working for some people, but not all. I synced by WiFi. What did you use?

0 AKL 10 months ago in reply to ovekvam

Wifi for me too. I also have my watch's "Threshold" & "Max HR" both auto-detect set to "on".

0 ovekvam 10 months ago in reply to AKL

Same here.

0 9610916 10 months ago in reply to AKL

Those of you for whom it's working, do you have running specific heart rate data on your watch activated?

0 AKL 10 months ago in reply to ovekvam

** CORRECTION ** to my reply last night, I just remembered that I actually had my iPhone with me at the running track but it was in my car. When I accepted the new LT values on my watch, it was probably too far away from the iPhone to sync via Bluetooth. But it must then have synced with the iPhone when I got back to the car. Sorry for confusion.