In the latest release activities are considered duplicates if they start within 1 minute of each other and have distance and elapsed time within 1% of each other.
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The distance match might be a problem if the source files in Garmin & Strava are different. One might be from TrainerRoad, and other Zwift for example. The distance recorded for a given ride varies dramatically app to app
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Hmm. I made it quite strict to avoid false dups. But I suppose the start time and elapsed time might be sufficient.
It was just a thought that I thought might affect a number of people, but it might not.
I have that scenario, but because GC and Strava are both tidy, I will just delete all the Strava data
@david just a question on this - my garmin connect activities have synced but the activity title just seems to be ‘morning ride’ or ‘evening ride’ etc. rather than the activity name eg. ‘Zwift - Watopia’.
Is this a bug or perhaps some other setting I need to update? Could it be related to any Garmin privacy settings which are all private at the moment?
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hey @david. Even though I have “Download activities” for Strava disabled, I just got a dup pulled in
me too!
I have the same problem, many name of the garmin connect activity are morning ride ecc, The workout maked on zwift don’t recording the TSS when uploaded on GC, so need to recording the same workout also with garmin edge, but the km or velocity will be different in the two file, so I make manual adjustment in the workout page on GC but the same workout syncronized on Intervals don’t report my adjustments.
Hi @david - apologies for being a pain, but +1 for duplicate activities here; I switched on Garmin Connect sync yesterday and switched off Strava (without revoking access) and I’ve since had three activities duplicate (a run, a gym workout and a bike workout from TrainerRoad, so a mixture of different activities).
No problem at all deleting these manually if that’s what’s needed, but thought I should flag it in this thread.
Thanks for everything you do - I shared your site with my triathlon club and it’s been a massive hit with coach and athletes!
Thanks. I am looking at the “still getting dups from Strava” issue now.
This “multiple sources of activities” thing is going to take a little time to sort out.
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Thanks for the reply! I’ll leave the dups in for the time being and will just bask in the glow of my fitness (temporarily) soaring!
If there’s anything I can do to help, please let me know.
Thanks again, Andy.
Ok I wasn’t checking that “download from Strava” flag everywhere I should have. If you have that off now you shouldn’t see any more Strava activities coming in.
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Unfortunately Garmin Connect doesn’t give me that information, only the .fit file and some summary data (distance etc.). The “Morning Ride” etc. is generated by Intervals.icu.
You can click the activity icon in Intervals.icu and edit the name, description, change type etc.
That’s unfortunate but thanks for the info 
Since duplicates aren’t handled yet, I was wondering where the difference in Fitness, Fatigue and Form for each activity (top right corner when viewing activity) comes from. The load for those duplicates is 117 and 118, while for…
Fitness: 67 vs 64
Fatigue: 107 vs 92
Form: -60% vs -44%
Any idea how this can be explained?
What is more, the activity type is so far more accurate for Strava activities. E.g. Garmin’s “Training” is regarded as “Walk” in intervals.icu. For the same Strava activity it’s recognized as “Workout”.
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Hello,
I see that many users have issues with Strava / Garmin duplicates and it is the case for me too. I still have the sync for bot services active. I understand Garmin is the preferred one, but as some of my activities might happen only on Strava, I leave it for the moment. I can solve the issue if I open the Garmin activity and click the “sync from Garmin” button, afterwards I get the activity title I changed in the meantime and the Strava activity disappeared.
But beside this: Great that Garmin Connect is “online”. Thanks @david for the good work.
Cheers
Boris
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Hey David, just to let you know that this appears to be working perfectly for me now - I’ve uploaded four workouts since your reply and no duplicates so far.
Thank you for everything you do!
Another data point for the duplicates issue! (I have both Garmin & Strava set to download activities.)
This afternoon I went for a short walk, looked on intervals and saw that the Garmin one had been pulled in, and if i checked “show deleted activities” I could see the Strava one marked up as deleted, as expected.
Later this evening I went for another short walk. This seems to have somehow “undeleted” my earlier activity from strava, but the duplicate strava activity from this evening does show as deleted. See image.
Hope this helps iron out the last few bugs with the duplicate activities!
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Ah thanks that is indeed a useful hint as to what is going wrong.
Is this fixed or how to fix it? I have many activities duplicated from strava and garmin into intervals.