Ok not professionals then, what I'm asking really I guess, is does anyone know of a fully supported Grand Tour Sportive?
I haven't quite heard of a full grand tour like that but I do know of hardy people cycling the tour one day in advance. These past 2 years a group of Dutch blokes did it and this year a team of I think 6 US ladies did it as part of the "
Reve tour". One of them blogged on the
peloton website. Both these groups had their own support teams.
I have heard of an amateur week long sportive, the "
Haute Route" from Geneva to Nice, (in the spirit of that bloke who drove elephants over the alps). Emma Pooley did it this year as post olympic preparation for the tour de l'ardeche, which she won.
Grand tours really are very hard and damaging to the body so I reckon it's a bit of a danger to run a full sportive. Probably the TdF would be the easiest in the sense that gradients are less severe than the Giro or Vuelta but you can see on Heidi's Swift's blog, they suffered an awful lot.