Originally Posted by
njkayaker
Yes, it's a known issue.
The Explore doesn't have a barometer. So, it has to rely on GPS for elevation. A barometer is considered the best option for measuring elevation/gain. GPS is known poor choice.
Garmin Connect will "correct" the elevation for units that don't have a barometer.
Garmin Connect does do the correction automatically but Strava does not. I have to request a correction every time I upload a ride.
If Strava can be set up to automatically correct every ride uploaded, I haven't found it.