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FOR BEGINNERS
A triathlon can feel daunting, but it does not have to be. This is your starting line. Below you will find IRONMAN's best beginner guides, from your first swim to race day, plus tips on training, nutrition, gear, and staying motivated. Whether you are chasing your first sprint or your first IRONMAN, start here and take it one step at a time.
New to the sport? Get the fundamentals right before you build up your training.
Build your fitness and fuel it well, from open water to race-day nutrition.
Keep your head in the game with stories and tips from athletes who started right where you are.
Ready to go deeper? These IRONMAN resources take you from your first session to the start line.
Plans, coaching, and guidance for every distance.
Explore ›Nutrition and hydration for training and race day.
Explore ›The kit you need for the swim, bike, and run.
Explore ›Compare sprint, Olympic, 70.3, and IRONMAN.
Explore ›A week-by-week plan for your first half distance.
Explore ›Road bike or triathlon bike? Decide with confidence.
Explore ›It depends on the distance and your starting fitness. With a base of general fitness, many beginners need about 8 to 12 weeks for a sprint, 12 to 16 weeks for an Olympic distance, around 16 weeks for an IRONMAN 70.3, and 6 to 12 months for a full-distance IRONMAN. Build gradually and stay consistent rather than cramming.
The 80/20 rule means spending about 80 percent of your training time at an easy, conversational effort and only about 20 percent at hard intensity. Easy volume builds endurance, while a small amount of hard work adds speed. Most beginners go too hard on easy days, which leaves them tired rather than fitter.
A simple beginner week has about two swims, two bikes, and two runs, with at least one rest or mobility day. Keep most sessions easy, add one slightly harder session per discipline, and put your longest ride and run on the weekend. Add a short run straight off the bike, a brick, once a week as you progress.
The most common mistakes are training too hard on easy days, skipping recovery, neglecting the swim, never practicing race-day nutrition, and buying gear before getting a proper bike fit. Consistency, easy aerobic volume, and rehearsed fueling matter far more than any single hard workout.