I just googled marathon fabric and came up with these:
Amazon.com: Marathon runners and Sneakers
http://www.amazon.com/Runners-Runnin.../dp/B00DOJKX0Q
http://www.amazon.com/Timeless-Treas..._bxgy_hg_img_y
Also, I found sneaker buttons on Fabric.com
Item Number 0321933
Country of Origin China
Brand Jesse James Company