Modern Garmin devices have DEM (Digital Elevation Model) data on board, so if there is a route/course/track whithout integrated elevation data the device can calculate it with the DEM data. The "ascent remaining" data is provided by native datafields, so Garmin just need to provide it to and by the SDK.
Modern Garmin devices have DEM (Digital Elevation Model) data on board, so if there is a route/course/track whithout integrated elevation data the device can calculate it with the DEM data. The "ascent remaining" data is provided by native datafields, so Garmin just need to provide it to and by the SDK.