Endurance Score_ Incorrect Contributor_ Swimming

Date now 30th May 2025.

By far my main activity is Running.

Over the last month / 4-weeks I have run 167km. Total running time 18hrs. Average 38min/day.

Endurance score Top contributors presently shows Running at 63% and swimming at 33.33%. I have not recorded a swimming activity for 5-weeks. 

I last recorded a swimming activity on 26th April, 20-minute workout.

As soon as I completed the Pool swimming activity, I checked the workout and it had it down as a 12,442 Calories workout... for 20mins !!

My endurance score immediately jumped around 500 points !!,  and swimming was added as 33% of top contributors, 4-week period. I had been running for 14hrs that period, and swimming for 20mins. 

I have not been / recorded a swimming activity since.

Yet Garmin Connect and my FR965 have had swimming at 33% of top contributors every week for endurance score since 26th April. 

I have even deleted the swimming activity in an attempt to reset my endurance score but swimming has remained 33% (+/- 1%) of contributors since 26th April. 

Any ideas on what the problem is or how I can get rid of the incorrect swimming contribution ? 

Thanks in advance.

Software Version 23.20

  • Last week I emailed Garmin Support with the above information and request, So far no response other than Confirmation of email submission.

    Swimming is now showing as 34%, with no Swim for over 5 weeks, Running 22hrs (5-weeks)  and only 61%...    Thinking