We have a 3 year old pit mix (mainly Pit) Boken, and have a new 4 month old staffy/border collie mix (Camper). Boken runs about 5 miles every other day with me or my wife, its also a hell of a climb, about 1000 feet in 2.5 miles, then back down the hill.
I am trying to figure out when we can take Camper with us. He went on a 5 mile hike the other day, seemed to hold up well. Just dont want to over work him. We are in Nor Cal, and the temp at the time we run them is about 70. At the top of the run is a spring and water.
btw, that pic is old, the Camper almost weighs as much as Boken now (boy, how they grow)