Well, when the feature came my first thoughts was that it's useless for trail running as you can't get it to have high enough change to the pace based on elevation.
And Garmin hasn't done anything to it. You just can't have the uphill effort easy enough.
Also another thing is that Garmin has bad elevation data in some parts of the world and it makes the whole PacePro useless.
So nice idea in theory, but works only with flat runs and in some parts of the world.
