In what sport are steroids mostly used?

Data on anabolic steroid use in sports is hard to come by as they are banned in most sports. But there are many different types of steroids so they are used in a broad spectrum of sports. Steroids that help with endurance can be used in sports like distance running and swimming. Steroids assoisciated with strength will be used in sports such as Weightlifting and Wrestling. Others are used to increase muscle size and mass, these would be used in sports like bodybuilding. So in answer to your question anabolic steroids are commonly used in many sports and are not more highly assosciated with any one sport in particular.