Runnersworld and Adidas wanted to create an online tool that would make it easy to choose, among dozens of models, the shoe that’s right for you. We faced quite a challenge – every foot is different and people run on lots of surfaces. The solution lies in simplifying interrelated criteria such as weight, pronation and arch height to the point where we could program an algorithm to parse the product catalog. The runner answers four questions and receives a star-rated recommendation. Created in collaboration with our friends at