Here are a list of some tough climbs, ranked by APM coefficient ( not perfect because it is biased to very steep climbs, but a decent starting point nonetheless ) :
Anteriormente hemos presentado un par de listas sobre puertos donde se tenían en cuenta las rampas máximas o el kilómetro más duro que se han visto en carrera. Lo bueno de esas listas es que el dat…
plataformarecorridosciclistas.org
I know coefficients like that exist but I'm not that much of a fan of them.
Rough list of comparable climbs would be like
- Agnello east
- Stelvio both sides
- Lago Serru
- Cuitu Negru
- Bola del Mundo
- Gavia south, hasn't been raced in ages
- Col de Portet
- Passo Manghen
- Col de la Lombarde
- Cime de Bonette
There's more but I really wonder what's the main determinant were looking at here, and if it's altitude, length, gradient or specific profile, etc. Some climbs look weird to put in there like Cuitu Negru but I think you can definitely replace altitude by gradient to some degree. Also most of these haven't been used as MTFs, which is a key difference, and some of them haven't even been used as a decisive climb, like Manghen.
I think Lago Serru is the most directly comparable, and that just having a few super hard km at the end of a long climb isn't that special in itself, going by Bola del mundo.