Actually, I would say labs. There are TONS of people on my lab board that camp with their labs. They tend to be up for anything, pretty adaptable, good recall, versatile coat, and as long as you keep them physically fit (as I'm sure the OP would) can go a long time--there was a guy on my lab board that mountain bikes 10 miles a day with his labs. Also, many of them are not too incredibly prey driven (which I consider a good thing)--I've called Jack off of running deer, critters, etc.