I believe the official profile is a bit off and the finish of the stage is closer to 750 meters a.s.l than the 800+ on the profile
I think the last climb is something like 2 km at around 5% very roughly.
I think it will be an interesting experiment in pacing and more interesting to me than a pure power focus TTT.
Yeah, 2.1 kms at 4.8% I believe. Then it really is not worse than when the Tour had a TTT finishing on the Côte de Cadoudal in Plumelec (where only the biggest of champions win).