Thank you for your help.
Here is the summary of what I will send out to the recipients.

TO VIEW OUR GPS TRACKS IN A GOOGLE MAPS BROWSER (TERRAIN/TOPO):
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a. Go to https://www.google.com/mymaps on any web browser.
b. Click on "Create a new map" (mandatory google signin, sorry).
c. Register a google account name (it has to be done, sorry).
d. Once signed in, you will see "Untitled map" & "Untitled layer" at top left.
e. Press the "Import" link below "Untitled layer" at top left.
f. Drag or select the desired CSV, XLSX, KML, KMZ or GPX track file.
g. Your hiking track will show up in the browser in the "Base" Google Map.
http://i.imgur.com/4JHmuwv.jpg
h. Change the Base map to "Terrain" in the bottom of the top-left box.
i. That same track will show up in the browser in the "Terrain" Google Map.
http://i.imgur.com/0ysdaGi.jpg
Unfortunately when you zoom in to about a half mile, terrain goes blurry.
k. To export the track as a KML, locate the Export to KML button.
j. To share this track with others, click on "Share" in the top left box.

TO VIEW OUR GPS TRACKS IN GOOGLE EARTH (TERRAIN/TOPO):
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1. To view your KML file in Google Earth satellite view:
Start Google Earth:
GoogleEarth: File Open MyTrack.kml
http://i.imgur.com/PdNIe7T.jpg

You can tilt the view so that you can better see heights:
http://i.imgur.com/dm5HzQ6.jpg

2. To better see the elevation lines, obtain USA USGS topographic maps:
Point your web browser to http://www.earthpoint.us/TopoMap.aspx
Press the "View on Google Earth" button
This will Download USGS topo maps named "EarthPointTopoMap_012701.kml"

3. Load the USA USGS topographic map into Google Earth:
GoogleEarth: File Open EarthPointTopoMap_012701.kml
GoogleEarth: View Sidebar

4. Select the Earth Point Topo Map USGS Quandrangles:
GoogleEarth: Places Earth Point Topo Map USGS Quadrangles

5. Load your KML track which will now topographically show on GE:
GoogleEarth: File Open MyTrack.kml
You will see your tracks on a topographic map.
http://i.imgur.com/Y43qPId.jpg

You can tilt this topo map, but I always have issues with tilt.

6. If you loaded a KMZ file, you can save as KML for portability:
GoogleEarth: File Open MyTrack.kmz
GoogleEarth: File Save Save Place As MyTrack.kml

7. To return to satellite view, uncheck what you checked above:
GoogleEarth: View Sidebar
GoogleEarth: Places Earth Point Topo Map USGS Quadrangles