I use the tool from http://tour.xplova.com and plan TDF-2011 Stage 19 according to the waypoints that posted in TDF, http://tour.xplova.com/routeDetail/?GUID=9A998680-FD67-3598-5DB2-2F9E4C3928CC&callbackURI=routes%3Forderby%3DcreateDatetime%26order%3DDESC%26maxlimit%3D100%26diff%3D1-4%26dis%3D0-200%26focusRoute%3D911%26subPage%3Drecent%26 , you can zoom in to see and analyze the details of distance v.s. elevation profile, you can also click the play button to activate the google earth route simulation. Looks like a new and useful tool.