I don't really know why this is listed as a Knoxville attraction (other than the fact that there is almost nothing to do in Knoxville). That aside, Runner's Market has two location in Knoxville and it is a very good specialty running store. They have a wide variety of products and most of the staff is very friendly and knowledgeable about running.
While I no longer run, I still shop there for athletic gear, shoes, etc. They usually have shoes on sale and often have discounted clothing items.
If you're a runner or walker, Runner's Market is the store for you.
If you own or manage Runner's Market, register now for free tools to enhance your listing, attract new reviews, and respond to reviewers.