Grand Tours - Total Ascent (By stage, particularly the giro)
I have found a site with a user who appears to have gone to considerable effort to plot and upload many stages of many tours, including Tour De France 2013 and Giro D'Italia 2013 and many others.

You can view his list here:

http://www.gpsies.com/trackList.do?username=Daniano

From my sampling, they appear to be pretty accurate, but, they are not official.