Easily downloadable copies of sections of the IAAF rule book and information on AAI Juvenile hurdle distances and throwing implement weights are available here You may be interested in learning the rules of certain events or of knowing the various hurdle distances or weight specifications used in AAI juvenile competition. The full IAAF Competitions rule book is available for download at the following link, and contains full details of all IAAF competition rules. IAAF Competitions Rule Book but we have broken it down into smaller sections for easier download. IAAF Track event rulesIAAF Field Event rulesIAAF Race Walking RulesIAAF Cross Country rulesIAAF Combined event rulesAAI Juvenile Hurdle Distances and Throwing Weights