Bing Maps includes elevation gain, slope (-/+%) with an interactive profile chart linked to the map route of each stage.
The 2010 Tour De France Bing Maps app:
This app is designed to help you visualise the overall race, the stages (stages tab + numbers) and how variables such as weather & elevation (elevation profiles) will impact each stage. Results will be updated along the way in the 'Results' tab.
Check the content in the 'Stages' and 'Results' tabs as you keep track of the greatest cycling race in the world.