I will never do this to myself again. 2km of elevation.

This was a bloody masacre. You climb 1400m of altitude, drop 200, climb 100, drop 200, climb again, drop again. All that on climbs so steep that you need to walk or you fall from tour bicycle unless you are a pro. A bloody masacre. If you are in regular shape and do rides around 50-70k weekly and short ones up the hill every day this will prove you only think you are in shape.