I can walk all 4 of my dogs on my own. Which is 3 huskies and 1 akita. I can also jog with all 4 if we have a routine...if i tried to do it right now i'd probably be dragged down the street, since they've been cooped up all winter lol
I also got a joring belt for Christmas, and its amazing. Granted I only do one at a time right now since my roads are busy and we haven't found a good spot to run all safely and the towline is long, so maybe once i get a shorter line i'll try multiple dogs.