Originally Posted by
IPassGas
The total amount of climbing over a route is often very different between google and RWGPS. Which is more accurate in your experience?
They are probably using the same base elevation data. (I suppose Google could be measuring elevation while driving around but I don't think it's likely.)
So, the difference may be in how it's being calculated from the base elevation.
It's fairly common that the elevation gain measured by a Garmin device is larger than the RWGPS estimate.