How do you carry your camera while hiking?

I'm going on a hiking trip to Slovenia in a couple of months and wanted to bring my camera (Sony A6600 w/18-135mm) with me. The thing is, I would like to avoid carrying it on my backpack and having to take it out everytime I want to take some pictures. The hike is going to be 4 days long with walks averaging 5 to 8 hours.

I'm wondering what are you using for these situations?

Thanks for your help!