We have a cycling event near Grenoble called the Super Brevet Randonneur des Alpes, which I rode in July this year. It's run every two years, and it's a brevet event, so not timed and you just have to get around and get stamps on your card - and a pasta lunch in Valloire. However, it's a similar route to next year's Etape, with the Croix de Fer, Montvernier climb (the little one with all the hairpins), then Telegraphe, Galibier and Sarenne at the end. We didn't end in Alpe d'Huez but descended to the valley to give 213km with 5800m.
If anybody is coming across and fancies a spin around Grenoble, let me know.