Why do races have rules — and why do some of them seem “unwritten”? Race rules aren’t about limiting fun; they exist to keep participants safe, results fair, and events legally protected. Some rules are clearly stated in waivers and briefings, while others are universally understood across road running, cycling, hiking, and multisport events. Ignoring them doesn’t just affect one athlete — it can disrupt results, invalidate insurance, and threaten the future of the event itself. Understanding and respecting race rules helps ensure that everyone gets a safe, fair, and enjoyable race day.