I’m not sure how many miles, but I hiked probably close to 50 miles fishing, moose and duck hunting in AK. I helped a buddy on his moose hunt and we covered a lot of nasty terrain in our waders. My buddy was wearing the new Sitka Waders while I wore the Kuiu. We both were nipples deep too many times and slugged through a lot of thick brush. My buddy did get his moose and it took us 11-1/2 hours to pack it out. We lived in our waders every day and did a lot of hiking with packs and pushing a canoe.
The Kuiu waders are one of the best pieces of kit I’ve ever purchased. I would say the boots on the Kuiu are superior to the Sitka boots. I climbed some steep and slick terrain to get advantage looking for moose and felt completely comfortable. The waders breathed surprisingly well, better than more goretex jacket. A zipper would be nice, but I never had a problem taking a leak or dump, it just took e a bit longer. My cousin and I were both wearing AGC bino harnesses, he had to remove his bino harness to unzip for a leak, so he wasn’t much faster than me.
I would definitely buy the Kuiu waders for the boots and largely made in USA. The Sitka waders were full made in China.