What Is a Triathlon?

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A triathlon is a multi-sport endurance event that consists of three consecutive disciplines: swimming, cycling, and running. It is a challenging competition that requires participants to have a high level of physical fitness and mental endurance. The order of the disciplines is usually swimming first, followed by cycling, and ending with running. Triathlons can vary in distance, ranging from short sprints to long-distance races, such as the Ironman triathlon. Athletes compete against each other or against the clock, aiming to complete the course in the fastest time possible. Triathlons have gained popularity worldwide and attract participants of all ages and abilities.


Do you enjoy swimming? How about riding a bicycle? Does running put you in a positive mood? Have you ever combined these three activities into one long and challenging race? If you have, then you are familiar with the triathlon.

If you are not familiar with a triathlon, the name itself gives away the fact that it involves three activities: swimming, cycling, and running. Competitors participate in the race in a specific order – swim, bike, run – without any breaks in between.

The origins of the triathlon can be traced back to the 1920s in France, when a race called “Les trois sports” (which means “the three sports” in English) challenged participants to swim across the Marne channel, bike for 12 kilometers, and run for three kilometers. The American version of the triathlon has a more recent history.

The modern triathlon had its beginnings in Southern California, with the first Mission Bay Triathlon taking place on September 25, 1974, in San Diego. On that day, nearly 50 individuals competed in a race that included a 500-yard swim, a five-mile bike ride, and a six-mile run.

Triathlons gradually gained popularity as other locations began hosting their own events. However, things really took off in 1978 when three popular endurance events in Hawaii were combined to create the Hawaii Ironman Triathlon.

The Ironman, as it is now known, was based on the Waikiki Rough Water Swim (2.4 miles), the Oahu Bike Race (112 miles), and the Honolulu Marathon (26.2 miles). The first Ironman had 15 competitors, with only 12 finishing the race. The Ironman began being broadcasted by ABC’s Wide World of Sports in 1982, and by 2006, it attracted nearly 3,000 participants.

The triathlon achieved Olympic status in 1989, making it the fastest sport to do so. It made its Olympic debut at the Sydney Olympics in Australia in 2000. The Olympic triathlon consists of a 0.93-mile (1.5-kilometer) swim, a 24.8-mile (40-kilometer) bike ride, and a 6.2-mile (10-kilometer) run.

If you are not ready for an Olympic or Ironman triathlon, there is no need to worry. Triathlons come in various distances. For beginners, there are mini or “sprint” triathlons that include a half-mile swim, a 15-mile bike ride, and a three-mile run.

Some event organizers have even created unique variations of the triathlon to appeal to a wider range of athletes. For example, aquathons combine swimming and running, while duathlons replace swimming with a run/bike/run race. In mountainous areas, races may include a combination of trail running, mountain biking, and cross-country skiing.

Try It Out

Are you ready to experience swimming, biking, and running? Gather a few friends and family members to join you in exploring the following activities:

  • Invite an adult friend or family member to spend a day participating in a triathlon. No, you don’t have to actually compete in a triathlon or race against each other. Instead, have fun engaging in each of the activities involved in a triathlon: swimming, cycling, and running. You can spend as much or as little time as you want on each activity. Just enjoy getting three different types of exercise!
  • If you’re considering participating in a local triathlon for kids, go online and read Triathlon Training for Kids to gain valuable insight on how to train and prepare for your first triathlon. Take note of at least three important tips that you learn and share them with a friend or family member.
  • If you’re up for a challenge, you might be interested in the Ironman Triathlon. Visit the Ironman Triathlon Videos site to watch videos of highlights from past Ironman competitions. Perhaps they will inspire you to enter an Ironman competition in the near future!

Additional Resources

  • https://adventure.howstuffworks.com/outdoor-activities/triathlons/triathlon-distances.htm
  • https://totaltriathlon.com/triathlon-history
  • https://www.athleticscholarships.net/history-of-triathlon.htm

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