Just a question to the forum about 2 Alpine monsters that are a staple of Tour and Giro history.
The Galibier and Stelvio.
I was taking a look at their use in GTs over the last 20years and what surprises me is despite the fact they are almost the same size (Galibier about 100m lower), the stages with the Stelvio seem to create far more carnage and larger time gaps.
Is it because the Stelvio is a far harder climb? Do they not race the Galibier hard enough? Maybe the colder conditions in May play a factor?
Is it fair to say that the Stelvio is just a different beast to the Galibier???
I think there are many factors at play here.
First of all, the north side of the Stelvio, the one which is way harder, has only been used twice in the last 20 years. And while that side indeed has created enormous time gaps, the other one has not. Both in 2012 and in 2014 the stage created big gaps but the crucial attack either came before the climb or in the case of 2014 on the descent. Then there is 2017 where all the favorites rolled over the Stelvio together.
That being said, I would say the north side, which does indeed create more carnage than the Galibier, really is just a bit harder. The Galibier is hard too, but it only starts going above 8% on the last few kilometers. Compare that to the Stelvio where the last 16km average 8.4%. According to cyclingcols that's as steep as the steepest 5km stretch of the Galibier. In todays peloton where high gradients are necessary for big gaps that just makes a big difference.
And then lastly, I think a big factor why the Galibier doesn't create as much carnage is that it doesn't link particularly well with any climb and you have a very long and flat descent where being in a group is a huge advantage. Looking back to recent Tour editions, the race quite regularly blew apart on the Galibier. In 2021 you had Pogacar vs. Jumbo, in 2011 you had Contador and Schleck attacking and in 2007 Contador had a minute gap to the gc group after an attack Cadel Evans is allegedly still recovering from. But in all of those races the gc group was back together after the descent.
I also just realized that if I write about the different sides of the Stelvio, I have to mention the different sides of the Galibier too. Because the southern sides really are just that much easier.