Google Earth can give you an elevation profile of pretty much anything.
There are 4 ways to go about:
- Look for a .KMZ or .KML file to load into Google Earth.
- Activate the EveryTrail layer in Google Earth int the
Layers
panel under
'Primary Database'->'Gallery'->'Everytrail'
and look for GPS tracks others have uploaded by flying over the area you are interested in and looking for EveryTrail markers. Users often upload pictures with their GPS tracks, which gives you even more context.
- Load a track from your GPS into Google Earth. This is great after the fact if you want to know the elevation profile of something you have just completed.
- Trace the route yourself with the
Path
tool. This feature is great if you are planning something that is not commonly done by others. I frequently scope out my runs this way.
Once you did either of those, right or option click on that path in your My Places
view, and choose Show Elevation Profile
from the popup-menu.
Since you have your trail in the form of a .GPX file from the website you linked to, you can use the website http://www.gpsvisualizer.com/ to convert the file to a .KMZ file, which you can load into Google Earth.