Several factors play a role here. For one, there is a basic difficulty because of the altitude we are at, i.e. it will feel like you are working harder going uphill than what you are used to. That’s of course unless you live at that kind of an altitude, too.
Overall, the roughly 11,000 m of positive and negative elevation are a challenge not to underestimate.
Then there is the temperatures which are in our favour. It’s fall an thus the weather is pretty stable. Cold in the mornings and then warming up but only to a certain level. So, you are not running and hiking in the heat. It can be a bit challenging to adapt. On uphills you often may feel a bit cold but sweat at the same time. Obviously, when you stop or go downhill it will feel cooler. Therefore, it’s important to adjust layers and have spare layers.
Last but not least, there is the technicality of the trails. There are sections with wide and easy paths and no or only few obstacles on the ground. However, there are also many narrow trails that may be covered with vegetation, rocks, or rocks hidden under vegetation. There are wet and slippery areas, steep sections and trails that have a dangerous slope right next to them. Again, the fact that it should be dry helps but, overall, there are many challenging trails. You should be used to exposed alpine trails, steep and slippery trails and not be afraid of heights. If we are unlucky and there is substantial rainfall, many sections will become more difficult.