When navigating with GPX files on the eTrex 20/30, automatically generated high and low point cues were displayed as shown at the URL below, but they do not appear during navigation on the eTrex Touch.
https://support.ridewithgps.com/hc/en-us/articles/13060788820251-Garmin-eTrex
Is there a way to display high and low elevation point on the eTrex Touch?