D-Day. This would have been even better as Stage 20, but it's still the most sawtoothed profile of the race... and, in my opinion, the queen stage.
Not much to say but this stage is fecking brutal, can't see a change in the GC, but the break and the time limit could well be interesting if it is raced hard.
Allez Sam!
Map
Profile
Timetable (Local French Time)
Neutralised start: 12:05
Start: 12:30
Intermediate sprint: 12:51/12:52/12:53
Cormet de Roselend: 13:59/14:04/14:12
Côte de la route des Villes: 14:28/14:34/14:44
Col des Saisies: 15:14/15:24/15:38
Col des Aravis: 15:54/16:06/16:22
Montée du plateau des Glières: 16:31/16:46/17:05
Finish: 17:12/17:28/17:50
Climbs
The intermediate sprint comes extremely early into the stage and so the start should be furious. The spike on the profile is obviously BS, but there's still some climbing just after the flag drops.

The first climb of the day is the Cormet de Roselend. Even if this is it's slightly easier side, it's still a solid climb, the breakaway will probably be formed here. There's no real flat from here onwards.

The riders will take a short detour towards the end of it's descent, to climb the Côte de la Route des Villes, the first 3.1k of the profile below.

It's immediately followed by the Col des Saisies. How this is a cat. 2 and the next is a cat. 1 is beyond me...

...because Aravis is twice as easy.

The wall that is the climb to Glières will make or break the day. It should be the last chance for anyone who's not Roglic to take time, let's hope this - and the stage - is raced accordingly...

There's still one uncategorised climb remaining, the Col des Fleuries. The ascent and descent are very similar, consistently at 4-5%.

The descent continues into the final kilometer before the road heads slightly uphill to the finish.
General classification after Stage 17
Primoz Roglic (slo)
Tadej Pogacar (slo) + 0.57
Miguel Ángel López + 1.26
Richie Porte + 3.05
Adam Yates + 3.14
Rigoberto Uran + 3.24
Mikel Landa + 3.27
Enric Mas + 4.18
Tom Dumoulin + 7.23
Alejandro Valverde + 9.31
Points classification after Stage 17
Sam Bennett 278
Peter Sagan 231
Matteo Trentin 218
Bryan Coquard 171
Caleb Ewan 158
Mountains classification after Stage 17
Tadej Pogacar 66
Primoz Roglic 63
Miguel Ángel López 51
Benoît Cosnefroy 36
Pierre Rolland 36
Young riders classification after Stage 17
Tadej Pogacar
Enric Mas + 3.21
Valentin Madouas + 1.24.17
Daniel Felipe Martinez + 1.48.51
Lennard Kämna + 1.52.47