The climb was fine on the entire section in terms of slope. The surface was worse in some places, because Ceta was repaired sometime in 2020 and so they put a lot of thick gravel there, which reached a layer of several tens of cm. And the bike wheels would get stuck in such gravel, or they would slip. So in addition to pedaling up, + 15-20% of the force to overcome the resistance of the gravel.