Preventorio from El Chorrillo

I had picked this climb purely for the challenge of 7 kilometres at an average of over 10％ with quite a few steeper sections. As I already had some experience on other climbs with those statistics, I knew I had to rent a bike with a suitable gear to avoid stalling. So I had asked for a rental bike with 34-32 gear ratio. However, when I got the bike, it turned out to have only a smallest rear sprocket of 28. After inquiring, also with another rental company, whether a bike with 32 teeth at the back was available, this turned out not to be possible. So I knew climbing this one was going to be very tough to perhaps impossible. Nevertheless, I accepted the challenge, after all, you are not often in Tenerife. Arriving at the foot of the climb, a big wall immediately looms up in front of you. Immediately in the smallest gear and with still fresh legs I set off. Soon it was time to start pedalling. However, after a few hundred metres at the start, the climb has a bit flatter each time. Yet it remains steep there too. At Machado you then have a breather when you turn left at a t junction. Then you quickly have to turn right again and follow the signs to Esperanza. Here another wall looms. A local farmer was walking along the road and looked surprised to see me cycling along at walking pace and sometimes zigzagging. He must have been thinking, he's not going to make it. Just before the first hairpin bend, my heart rate was so high that I had to stop. Not to be done with this resistance! Fortunately, there is a nice view of the surroundings here and I took a photo. After a short breather, I continued. After a stretch that is more manageable, I suddenly see a wall looming just before Las Barreras. Here it is incredibly steep, averaging more than 16％ over 450 metres. Even Even Evenepoel only went 10 km per hour on this stretch of segment. With the bike I had with that gear, I made it halfway and then had to take another breather. This one did last a bit longer. From here I dragged myself over the last steep stretch and it became more doable, still 1.5 km against the 10％, but no more outliers. The last stretch is in a pine forest and you have fewer views. At the confluence with the TF24 is the summit and I decided to turn further left towards the El Gaitero communication tower, another 13.5 km away at about 1730 metres.