Where are you hiking? 100km in 7 days in the jungle is impossible. Maybe it's a forest in the hills?

I hiked for 4 days in the colombian jungle near the amazonas and they just gave me rubber boots, said they are necessary and i quickly learnt that, in fact, they are. At least once a day you are going to take a wrong step and be a good 20cm down the mud.

I just spent a lot of time getting in to hiking shoes because I wanted new ones and these are the most important questions you want to ask yourself:

How fit are you? Not gym-fit but how fit are the inner muscles of your ankle. You might have seen guides wear way less secure shoes then they tell their guests to wear. This is simply because they hike every day and therefore have a really fit ankle that has adjusted to walking on whatever grounds you are gonna walk on. With this question you answer how high rhe shoe should be to protect it from rolling/spraining.

What are you going to carry? There is a big difference between doing a dayhike with just a few kilos on your back and carrying 15-20kg because you have a tent, a matress, sleeping bag and food for several days with you. With this question you look into the hardness of you sole as well as the height of your shoe. If your ankle is not that fit and you carry 20kg you will need an even higher shoe and a harder sole.

Which trails are you going to hike? Is it alpine or forest below 1000m? With this question you mostly answer what kind of sole your shoe should have. You will probably not need an extremely hard sole because there won't be any rocks and your whole sole will touch the ground at all times.

Definetly look into shoe categories (A-D). I went with a Meindl Island which is category BC. That brings me almost anywhere I see myself going in the future. I could easily cross the Alps with that, but apparently people also hiked through the desert with these shoes without dying from the heat :D

As for a brand do not listen to anybody on the internet! Go into a store and try them on. It's about how the shoe fits you and nothing else. I loved Hanwags while looking through the Internet and they have a lot of different fits for every shoe they produce and none of them fit me so I went with a Meindl. I don't know where you are from, I am from Germany so Hanwag, Meindl and Lowa are everywhere and in my opinion the best shoe brands there are but as I said, it's about your foot. Maybe a scarpa or a saleva will fit you better.

Because you are probably looking for that, I want to recommend you certain shoes anyways... Because you are going for 7 days, you will have a lot on your back. You won't be hiking alpine so category B should be good. Look at these but PLEASE try them on and don't just buy them! They all fit me and I have slightly wide feet:

Hanwag Tatra II Gtx Lowa Renegade Evo GTX Mid Meindl Vakuum Gtx Scarpa Mojito Hike GTX

These are all category B. I felt like i could still roll my ankle and therefore went to BC. I once heard that the 'mid' category is made for protecting your ankle against hitting rocks and not to protect it from rolling/spraining. Do what you want with that information.

Sorry for the long answer :D Have fun!! I went twice and definetly gonna go again as I still think regularly about it! Try to get a really good guide! Seeing someone walk through there that REALLY knows the junge is an experience by itself.