7 Different Triathlon Distances: How Long is a Triathlon?

Triathlon Distances - Finding the Right Length

Triathlon racing combines swimming, cycling, and running into one ultimate endurance event. Many triathlon races offer various distances to accommodate athletes of various abilities and intensities.

Let’s explore the various triathlon distances, from the shortest to the longest, to help you find the perfect challenge for your athletic goals.

Whichever distance you choose, proper pacing is always critical so you don’t blow up. Check out our run pacing chart in miles and run pacing chart in kilometers, and our triathlon calculator for reference.

If any phrases confuse you, be sure to see our glossary of triathlon terms.

Triathlon Race Format

The most common format of triathlon includes the three sports of swimming, cycling, and running. Here’s a breakdown of the typical triathlon race format:

  1. Swimming: The race usually starts with a swimming segment. Super sprint triathlons and sprint distance triathlons may be in a pool, but any distance longer than that will be outside in an open water environment. like lakes, rivers, or oceans. Participants often wear wetsuits for insulation and buoyancy when outside (see our list of the best triathlon wetsuits).
  2. Transition 1 (T1): After completing the swim, participants enter the transition area where they change from their swim gear to cycling gear. This transition involves putting on a helmet, cycling shoes, and any other necessary equipment for the bike segment. You then take your bike to the “bike out” area of transition before riding.
  3. Cycling: Once out of the transition area, participants start the cycling segment. The cycling course is typically on roads and can include various terrains and elevations. It will typically NOT be closed to vehicular traffic, so ride smart.
  4. Transition 2 (T2): After completing the cycling segment, participants enter the second transition area(typically the same area as T1). Here, they switch from cycling gear to running gear. This transition involves changing into running shoes and possibly changing clothing if it’s an Ironman distance triathlon.
  5. Running: The final segment of the triathlon is the running portion. The run course is usually on roads, trails, or paths. Longer distances may be a shorter loop run multiple times.
  6. Finish Line: After completing the running segment, participants cross the finish line, completing the triathlon. Their total race time is the sum of the time taken for each of the three disciplines, as well as the time spent in transition areas.

Additionally, there are variations of the triathlon, such as duathlons (run-bike-run), aquathlons (swim-run), aqua bikes (swim-bike), and swimrun (swim-run-swim-run) events which involve two of the three disciplines. The specific race format and distances can vary based on the event and the organizers’ preferences.

Comparison of Types of Triathlon Distances

The different triathlon lengths are as follows:

Triathlon DistanceSwim DistanceBike DistanceRun DistanceAvg Time
Super Sprint Triathlon300 meters10 km2.5 km45 min
Sprint Triathlon500 meters20 km5 km1h:15m
Olympic Triathlon1500 meters40 km10 km2h:45m
Half Ironman Triathlon (70.3)1.2 miles56 miles13.1 miles6h:10m
Ironman Triathlon (140.6)2.4 miles112 miles26.2 miles13h:00m
Ultra Triathlon6.2 miles263 miles52.4 milesa long time

Super Sprint Triathlon Distances

300-meter swim, 10 km bike, 2.5 km run

Avg Female Finishing Time

50 minutes

Avg Male Finishing Time

45 minutes

triathlon distances - woman starting the bike

The super sprint triathlon distance is the shortest triathlon distance, with a typical course featuring a 300-meter swim, a 10-kilometer bike ride, and a 2.5-kilometer run. Some people refer to these as a “mini-triathlon”.

Super sprints are often a popular distance for the beginner triathlete, and race organizers include them on race day to attract many first-timers. The short distances in a super sprint are doable for most triathletes.

They allow athletes to get used to the tempo of a triathlon race, along with the challenge of multiple sports in one day. The swim portion of a super sprint distance triathlon is most commonly held in a swimming pool environment.

Sprint Triathlon Distances

500-meter swim, 20 km bike, 5 km run

Avg Female Finishing Time


Avg Male Finishing Time


sprint triathlon distances and pool swim

The sprint triathlon distance is often the shortest and most accessible triathlon distance, making it a great choice for beginners or those looking for a fast-paced, intense race.

Typically, sprint triathlons consist of a 500-meter swim, a 20-kilometer bike ride, and a 5-kilometer run. The shorter distances make it manageable for athletes of all fitness levels and allow for a speedy race experience.

Due to its short length, a pool swim is often used for a sprint distance race.

A sprint distance triathlon is often held in urban areas and is popular among recreational athletes and those looking to dip their toes into the world of triathlons.

An easy-to-follow sprint distance triathlon training plan can be found here.

Check out the Sprint Triathlon 101 – Everything You Need to Know if you have any questions.

Olympic Triathlon Distances

1500-meter swim, 40 km bike ride, 10 km run

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Avg Male Finishing Time


Olympic triathlon distances - man finishing the bike

The Olympic distance triathlon, also known as the “standard distance” or “international distance”, is the triathlon distance raced in the Olympic Games.

Prior to inclusion in the Olympic Games, triathlons were varied in distance and common standards were non-existent. The International Olympic Committee had television viewers in mind and required a complete race be completed “in approximately two hours or less” so television watchers wouldn’t get bored. Voila! The Olympic distance triathlon was born.

The Olympic triathlon distance offers a slightly longer challenge compared to the sprint distance. An Olympic distance triathlon includes a 1.5-kilometer swim, a 40-kilometer bike ride, and a 10-kilometer run.

An Olympic distance triathlon is a swim that will typically be held in open water – either a lake, river, or ocean. This is an exciting step up from a sprint triathlon that is commonly held in a pool.

It requires a solid level of endurance and training but is still accessible to athletes who have some experience in swimming, cycling, and running. Your first Olympic distance triathlon will be a good indication of how you perform in a longer, multiple-hour race.

Olympic distance events are great stepping stones for those who want to progress from a sprint distance triathlon to longer distances.

Half Ironman Distances

1.2-mile swim, 56-mile bike, 13.1-mile run

Avg Female Finishing Time


Avg Male Finishing Time


Triathlon distances - open water swim

The half Ironman, also known as the Ironman 70.3 triathlon, is a significant step up in terms of distance and endurance. The “half iron distance” takes most athletes over twice as long to complete as an Olympic distance triathlon.

As the name suggests, the race covers half the distance of a full Ironman, or about 70.3 miles. The Ironman brand owns the rights to “Half Ironman” and “70.3”, so non-Ironman branded races might refer to this simply as a “half” or “middle distance” triathlon.

A half Ironman distance triathlon consists of a 1.2-mile swim, a 56-mile bike ride, and a 13.1-mile run (a half marathon). This distance requires a higher level of training and commitment, as athletes must build both endurance and strength across all three disciplines. RelatedHalf Marathon Training Plan and Bodyweight Strength Training for Triathletes.

Half Ironman events attract experienced triathletes and offer a taste of the challenge of a full Ironman, without the same level of commitment.

Ironman Triathlon Distances

2.4-mile swim, 112-mile bike, 26.2-mile run

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Ironman triathlon distances

The Ironman distance triathlon is the pinnacle of the triathlon distances, representing the ultimate test of endurance, mental fortitude, and physical fitness.

Ironman distance triathlons, also referred to as “full” distance triathlons, consist of a 2.4 mile (3.8-kilometer) swim, a 112 mile (180-kilometer) bike ride, and a full marathon run of 26.2 miles (42.2 kilometers).

Completing an Ironman race is an incredible achievement that requires months of dedicated training and preparation. The Hawaii Ironman in Kona is the Ironman World Championships and has been broadcast on television for 40 years. Qualifying for the Kona Ironman is typically the ultimate goal for many Ironman athletes.

Athletes who tackle this distance are often experienced triathletes looking to push their limits and prove their mettle. A common saying about completing an Ironman triathlon is “2.4-mile swim, 112-mile bike, 26.2-mile run, and the ability to brag forever”. This level of fitness requires year-round training, with athletes often taking part in winter endurance sports as well.

Ironman races are renowned for their challenging courses and awe-inspiring atmosphere, making them a bucket-list goal for many triathletes.

Ultra Triathlon Distances

6.2-mile swim, 263-mile bike, 52.4-mile run

triathletes exiting the swim in a triathlon

For those seeking an even greater challenge, ultra triathlons offer extended distances beyond the Ironman.

An ultra triathlon distance event that goes beyond the distances of a traditional Ironman triathlon. While there is no strict definition of what constitutes an ultra triathlon, these races typically involve covering distances significantly longer than the standard Ironman distances.

These races often involve multiple distances over several consecutive days. Ultra triathlons are a niche distance reserved for elite athletes and require extraordinary endurance and mental resilience.

One example is Ultraman Florida. It’s covered over three days:

  • Day 1: 6.2-mile swim and 90-mile bike
  • Day 2: 171.4-mile bike
  • Day 3: 52.4-mile run

Due to the challenging nature of this triathlon distance, races have fewer participants than other triathlons. Ultraman Florida might only have about 30 to 40 finishers each year. It’s truly for physically and mentally strong athletes.

Needless to say, there are probably many competitors using portable cold plunge tubs each day to recover.

Other Triathlon Race Types

In addition to the four main distances mentioned above, there are several other triathlon variations that cater to specific interests and abilities.

Team Relay

A team relay triathlon allows participants to compete as part of a team, with each member completing one or more sections of the race.

This format is a great option for those who prefer to focus on a specific discipline or enjoy the camaraderie of a team sport.

Many race directors include a team category in Olympic distance races and longer for athletes that may not want to complete the entire race on their own.

This is exactly how I started racing triathlon. I had two friends approach me and we entered as a mixed relay team. One friend did the swim, I raced the bike section, and another friend completed the run. It was great (and we won).

Off-road Triathlon (XTERRA)

XTERRA events take triathlon off the pavement and into the wild. XTERRA is a brand, similar to Ironman.

XTERRA events are mainly off-road triathlons and typically feature a mix of open-water swimming, mountain biking, and trail running.

Runner in an XTERRA triathlon race

These races offer a unique and challenging experience, combining the technical skills required for off-road navigation with the endurance demands of triathlon.

Distances are most closely aligned with the Olympic distance triathlons (1500m swim, 40km bike, 10km run) but there’s more variance due to the geographic area that the race is held around.

Finding Your Ideal Distance

If you are new to the sport or looking for a fast and exciting race, a sprint or Olympic distance triathlon might be a great starting point. For those seeking a longer and more demanding challenge, Half-Ironman or Ironman distances may be the distance to push you to your limits and provide a sense of accomplishment like no other.

Factors such as your current fitness level, available training time, and the support system you have in place. It’s essential to gradually build your endurance and skill level before taking on longer distances. Remember to consult with a coach or experienced triathlete to develop a training plan tailored to your goals and abilities.

Whether you’re a beginner or a seasoned triathlete, the variety of triathlon distances ensures there is a race that suits your preferences and challenges you to push beyond your limits. Embrace the journey, set your sights on your desired distance, and prepare to experience the exhilaration of triathlon as you swim, bike, and run toward the finish line of your chosen challenge. Good luck and enjoy the adventure!

Frequently Asked Questions

What is standard triathlon distance?

The standard triathlon distance consists of a 1.5-kilometer swim, a 40-kilometer bike ride, and a 10-kilometer run. This is also referred to as an Olympic distance triathlon.

What is a full triathlon?

A full triathlon, also known as an Ironman triathlon, consists of a 2.4-mile (3.86 km) swim, followed by a 112-mile (180.25 km) bike ride, and finishes with a 26.2-mile (42.2 km) marathon run.

What’s the difference between an Ironman and a triathlon?

An Ironman is a specific type of triathlon race. A triathlon is a multi-sport event that consists of three continuous and sequential endurance disciplines: swimming, cycling, and running. An Ironman triathlon is a long-distance triathlon race organized by the World Triathlon Corporation (WTC) and consists of a 2.4-mile (3.86 km) swim, followed by a 112-mile (180.25 km) bike ride, and finishing with a full marathon run of 26.2 miles (42.20 km). So, while all Ironman races are triathlons, not all triathlons are Ironman races.

What are the distances of an Ironman?

An Ironman triathlon consists of the following distances:

1. Swim: 3.86 kilometers (2.4 miles)
2. Bike: 180.25 kilometers (112 miles)
3. Run: 42.2 kilometers (26.2 miles)

These distances may vary slightly depending on the specific event or race.

What is a triathlon race?

A triathlon race is a multi-sport endurance event that consists of three consecutive disciplines: swimming, cycling, and running. Participants compete in all three disciplines sequentially without taking a break. The distances for each discipline may vary depending on the specific race, but the most common distances are a 1.5-kilometer swim, a 40-kilometer bike ride, and a 10-kilometer run. Triathlon races can be conducted in various distance formats, including sprint, Olympic, half-distance, and Ironman distances.

How many miles is a triathlon?

A standard distance triathlon typically consists of a 0.93-mile (1.5 km) swim, a 24.85-mile (40 km) bike ride, and a 6.21-mile (10 km) run, for a total distance of 31.07 miles (50 km). However there are many triathlon distances ranging from a super sprint triathlon to an Ironman Triathlon.

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