I think the Up and Running franchises have a very poor relationship with Adidas and Nike. companies like Saucony and Mizuno and even Asics are more interested in the smaller suppliers of specialist running gear. Not out of some sort of altruistic "keeping it grass roots thing" but more that those companies realise smaller shops and franchises build brand loyalty, people go back year after year for the same shoes.
The best selling shoes in that franchise are Mizuno Wave Riders they fly off the shelves apparently. Mizuno realise that their shoes are a niche market. So sell online and the specialist shops.
Nike and Adidas are very large companies with lots of fingers in lots of pies why should they sell to small reatilers when they can mass market through their stores?The bottom line is franchises get a better deal selling Saucony and others because they get a better deal from the shoe companies. More discount more choice and not dictated too by Nike et al "you will sell this and that"
(I dont work for a shoe shop btw)