I was a little concerned at first with my dog, running long distances, but we worked up from 15 or so miles per week to 50, and he seemed fine with it. But I w

I was a little concerned at first with my dog, running long distances, but we worked up from 15 or so miles per week to 50, and he seemed fine with it. But I was running in the early morning at the coolest time of day, so I'm sure that helped him.