Every professional scene has a hill it uses as a scale. Fixed start, known distance, and a ladder of times everybody quietly knows. It is how riders answer the form question without a laboratory, and it is one of the few things in cycling you can go and do yourself, on the same road, against the same clock.
Rocacorba is the archetype. Girona's residents have timed themselves from the Matamors bridge since the mid-2000s, and under thirty minutes still means something. The Col de la Madone above Menton carries the deepest ladder of all, from Rominger through Armstrong to Porte, and Pogačar has spent the last few years quietly rewriting it. Sa Calobra is where the winter camps find out who did the work in November.
You will not get anywhere near these times. That was never really the point.