Issues with GAP

Bug Reports
1

Hey there!

There seems to be 2 issues with the GAP.

  1. I’ll do a running workout on a flat surface and the GAP will be much faster than my average pace. This is less frequent. (see picture 1)
  2. I’ll do a running workout with hills and the GAP will be almost the same as the average (or slower) (see picture 2)

Based on what I’ve read in other posts, issue #2 could be due to running easier on downhills, but I’m not sure what could be causing the difference on issue #1. It honestly does not bug me that much, as I have in the information in Strava, but it does skew the training load quite a bit.
Would it be possible to make GAP an editable field? So that when this issues occurs, it can man modified manually to adjust the training load accordingly?

#1
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#2
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Thanks!

2

I am going to have a look at this on the weekend. I can’t understand that flat one.

3

The first run has weird velocity data. It has you running at better than 30km/h for 6 minutes or so. The gradient adjusted velocity is derived from that data. Here I have plotted both of them and as you would expect from a flat run there is very little difference:

Screenshot 2023-09-16 at 15.42.19
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If I average the velocity data points it comes out at 20.7 km/h which is much more than the actual average speed of 13.7 km/h.

GAP is calculated by averaging the gradient adjusted velocity data which is why it comes out so different.

You can do Actions → Ignore pace data to stop these from messing up your GAP curves.

I am not quite sure what to do about this. Maybe recalculate velocity from the distance and time data? How often does this happen?

4

Hi David!
Today I faced similar bug too. I got strange high GAP in uphill “running” interval even if the pace was ±steady. GAP climbs to 2:36 which can´t be true for me. There is no such a high value in Garmin connect.

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Snímek obrazovky 2024-12-31 175648
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5

Hi David!
I have another “BUG” with GAP. It seems to me, that GAP is counted from external elevation data and not from activity elevation. Because I run on flat 200m oval and I got very strange GAP and much stranger 30s GAP, like there were elevation changes which they weren´t.

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6

I’m also seeing some strange GAP values for short running intervals. On my 200m repeats on 14th April, the GAP is slower than the Pace despite the re being a modest uphill gradient (~1.5%)