The Sneaker Factory has long been a favorite of serious runners in North Jersey. Store founder Dean Shonts is a former cross country coach, his wife Betty qualified for the U.S. Olympic trials, and most of the employees run regularly.
It advertises a large selection of shoes, shorts, energy bars and gadgets to tell you how hard you're working and how far you've gone. The store offers a 10 percent discount to all high school and cross country team members. It rents triathlon wetsuits too. Check the website for a list of running routes in the Millburn area.