TOPO! Explorer App. - Viewing an Elevation Profile

From NatGeoMaps

1. Draw or import a route from your GPS.

2. After viewing the route, a details tab will appear by default.

3. Click the third tab to the right, which is "Elevation Profile".

4. An elevation profile will then be generated and displayed on the lower portion of the screen.

5. To view a route's corresponding waypoint (in relation to the elevation profile), simply click on the yellow line of the elevation profile. A crosshair will then display the relative location on the route.