Do you run with your papillon?

If so how often and how far? How did you build up to the program you are using? I usually run 3-4 times a week from 3-12 miles, although at some point I want to train for a marathon so the distances would go up. I'm not fast by any stretch of the imagination. I would love to take my new 2 year old papillon mix with me but don't want to do anything that would hurt her. She is from the shelter and we don't know what other breed she is but she weights about 15 lbs.