Can I delete just the activities from a single Garmin device from my Garmin Connect account?

Before going on a cycling holiday, I uploaded the routes to mine and a friend's Garmin 820s. He also asked for me to update his device, as he rarely attaches it to his PC.

Whilst I connected his 820 to my PC, it has sync'ed all his rides to my G-Connect account. As we ride together a lot, there are some very similar rides and telling the 100s of activities apart is going to takes ages...

Is there a way of sorting the data by a unique identifier, such as device serial number, so I can remove all his activities from my account, without reading each one to compare start and finish locations?

Any assistance would be appreciated.

Top Replies

WillNorthYork over 4 years ago +9 verified
TL;DR Here's the python script: https://pastebin.com/WwsUauH1
- Edited: July 6, 2023: Fixed 402 Payment Required error in device ID bookmarklet
- Edited January 02, 2021: Fixed 402 Payment Required error…
5399957 6 months ago in reply to WillNorthYork +3

Like others here, I'm so grateful to @WillNorthYork for working on a solution to delete all workouts from a given device. I tried to help somebody download a track, without thinking of the consequences…
1148148 over 1 year ago +2

Hey, just trying to use the code but the python app does not seem to be working. I cannot populate password (i type it in but it doesnt populate) and then when I provide all the other details and press…

All Replies

0 riverwinz over 3 years ago in reply to WillNorthYork

Hi WillNorthYork,

I get the error below when running the script. I am running MacOS and python 3.9. Any help would be very much appreciated :-)

---------

Searching for activities (this might take a while)...

Traceback (most recent call last):

File "/Users/carsten/Downloads/gc-deletebydevice.py", line 293, in <module>

ACTIVITY_LIST = http_req(ACLISTURL)

File "/Users/carsten/Downloads/gc-deletebydevice.py", line 107, in http_req

response = OPENER.open((request), data=post)

File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/urllib/request.py", line 523, in open

response = meth(req, response)

File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/urllib/request.py", line 632, in http_response

response = self.parent.error(

File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/urllib/request.py", line 561, in error

return self._call_chain(*args)

File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/urllib/request.py", line 494, in _call_chain

result = func(*args)

File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/urllib/request.py", line 641, in http_error_default

raise HTTPError(req.full_url, code, msg, hdrs, fp)

urllib.error.HTTPError: HTTP Error 402: Payment Required

Press ENTER to exit.

0 WillNorthYork over 3 years ago in reply to riverwinz

Hey, thanks for the bug report. I've edited the original comment with a fix to the script.

https://forums.garmin.com/apps-software/mobile-apps-web/f/garmin-connect-web/165851/can-i-delete-just-the-activities-from-a-single-garmin-device-from-my-garmin-connect-account/901884#901884

For those who are interested, the fix is to add the following header to the HTTP request that retrieves the activity list:

"NK: "NT"

Old code:

ACTIVITY_LIST = http_req(ACLISTURL)

New code:

ACTIVITY_LIST = http_req(ACLISTURL, None, { 'nk': 'NT' })

0 riverwinz over 3 years ago in reply to WillNorthYork

Perfect...thx

0 2wheelsal over 2 years ago in reply to WillNorthYork

Just wanted to add to the thanks! Accidentally synced a used device without erasing, and this was what I needed.

0 BiatcH over 2 years ago in reply to WillNorthYork

This is awesome - thank you.

0 JONIZZZLE over 1 year ago in reply to WillNorthYork

This works as of June 2022! While playing with my dad's old Edge 500 I was unaware that it synced all his cycling activities to my GC. Very thankful this script exists!

0 1148148 over 1 year ago

Hey, just trying to use the code but the python app does not seem to be working. I cannot populate password (i type it in but it doesnt populate) and then when I provide all the other details and press enter, it just shuts down. Any thought? Thanks in advance

0 filsilva 11 months ago

Thanks a lot this worked fine for removing 200 activities from a used edge 1030 I bought.... And now I have to do the same on strava...

0 JONIZZZLE 11 months ago in reply to filsilva

I had to contact Strava support to delete the activities on there

0 WillNorthYork 11 months ago in reply to 1148148

1148148 said:
Hey, just trying to use the code but the python app does not seem to be working. I cannot populate password (i type it in but it doesnt populate) and then when I provide all the other details and press enter, it just shuts down. Any thought? Thanks in advance

Sorry for the late reply but:

- the password is hidden by design, so you won't see anything when you type it

- the last thing you have to type is "YES" without the quotes (as per the prompt), otherwise the script purposely doesn't do anything