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Elevation Bug - Accurately recording total ascent/descent, but elevation plot on EVERY ride is completely flat, stuck at 5,276ft.

I recently noticed that on Garmin Connect, TrainingPeaks, & Strava, my elevation plots are completely flat, indicating that I was at 5,276ft for the entirety of the ride.  However, my total ascent/descent numbers are not only being recorded but appear to be accurate, as they change very little (<5%) if I use the 'correct elevation' function in either , for example, and that then also fixes the elevation plot.

Curious to know if anyone else has seen this problem or knows what may be causing it.  I attached two Garmin Connect screenshots from yesterday's ride, the first with the original elevation plot, and the second with it corrected.

Thanks!

  • It happened to me part way through my ride today. Elevation starts tracking normally but then goes flat line at 3736 ft. The totals seem correct for the ride.

  • It seems your problem is more common than mine based on some other posts I've seen in this forum.  I find it very strange that the elevation profile renders as completely flat with the same elevation for the duration of the ride, yet it still records the total ascent/descent.