It's really not that much up to a breed in this case as it is up to how well you raised it. My ex hiked with an Anatolian/lab/pyr mix for 15 years and she has been excellent. My Pyrenees mix that wasn't even leash trained when I got her ( some Amish farmer surrendered her when she got puppies so she really was just a livestock guard dog) is a great hiking dog and super friendly. Take the doggo for a few trips and see how they do. You obviously are a better choice for a caregiver :)