Motion Based Question

[SadieKate]

And from what I've seen and ridden of the Alps/Pyrenees, they're more like our Sierra roads with reasonable to high gradients; however, they pitch you up between the switchback instead of in the switchback like we do here, so you can often get more climbing overall. It was weird to have the actual switchback be the flat part where you can recover because it's so often not the case here.

Next time you're here and the trail is cleared, we'll ride the Flagline Tie singletrack. At the very end when your heart rate is highest the trail suddenly goes up the fall line and then the switchbacks and the trail between keep going up and up . . . and over roots and rocks. But then you get another 1000 ft above the South Fork drop. Yum.

Back to the original issue - and I'm not sure if anyone noted this yet, but weather can affect the barometric corrections. I spent a morning climbing the geysers and I and the other 5 people with Garmins all showed we were steadily descending. It was VERY odd, but the weather was changing dramatically from rainy/cold to warm.

Yup. But you've reported the weirdest case I've ever heard. Usually, it is just greater discrepancy between the climb/descent totals.

Just remember that weather patterns can cause some inconsistency, but generally not as much as GPS-only data.