We uses to take Wylie running with us when he was younger...probably about 20mins-1/2 hour - and omg, he LOVED it. He just had a blast. I know there are other folks on here who take their yorkies running too. As long as their knees check out okay, they should do great. I'd probably work them up to your goal time slowly, though.
__________________ ~ A friend told me I was delusional. I nearly fell off my unicorn. ~ °¨¨¨°ºOº°¨¨¨° Ann | Pfeiffer | Marcel Verdel Purcell | Wylie | Artie °¨¨¨°ºOº°¨¨¨° |