Meta description: Learn what the TriDeltathon is, how the swim, bike and run work, who can join, and where the money goes. A simple guide to Knoxville’s famous pool triathlon.
Are you looking for a friendly first triathlon? Maybe you have heard the name TriDeltathon and you want to know more. You are in the right place.
The TriDeltathon is a small, student-friendly race in Knoxville, Tennessee. It mixes swimming, cycling and running, and it also helps sick children. In this guide, I will explain the race in simple words. You will learn what the event is, how the course works, who runs it, and how to get ready.
What Is the TriDeltathon?
The TriDeltathon is a triathlon held at the University of Tennessee in Knoxville. A triathlon has three parts: swim, bike and run. You do them one after the other, and your total time decides your place.
The race organizers call it the oldest running pool triathlon in the country. That means the swim part happens in a swimming pool, not in a lake or a river. For many beginners, this is a big plus. A pool has no waves, no cold open water and no hidden weeds. You can see the bottom, and the lanes show you where to go.
The race is not a USAT sanctioned event. USAT is the national group for triathlon in the United States. This simply means the race does not follow the rules of that group. If you want to race at a bigger level later, you may need a different event for that. For a fun first race, it does not matter much.
Who Runs the Race?
Two groups work together to make the TriDeltathon happen.
The first group is Race Day Events. This is a company that organizes races in the Knoxville area. They handle the sign-up pages, timing and race day plans.
The second group is the Delta Delta Delta sorority, also called Tri Delta. The sorority was founded on November 27, 1888 at Boston University. At the University of Tennessee, the women of Tri Delta give volunteer help on race day. The race page says this help is “as usual” part of the event, so it is a long habit for them.
The name TriDeltathon is a clever mix of two ideas. “Tri” comes from triathlon, and “Delta” comes from Tri Delta. Put them together with “athon” and you get TriDeltathon.
Where the Money Goes
This is one of the best parts of the race. The money from the TriDeltathon goes to East Tennessee Children’s Hospital. A related race page also says that money helps Camp Eagle’s Nest, a summer camp for children with cancer and rare blood disorders.
This fits with the bigger story of Tri Delta. The national group chose children’s cancer charities as its main cause in 1974. Later, in 1999, it began a partnership with St. Jude Children’s Research Hospital. Local chapters also support children’s causes near them. In Knoxville, the TriDeltathon is one way to do that.
Even when the 2020 race had to be canceled, the organizers gave people a choice. People could let the race keep their entry fee so the charity still got help. Many racers like this kind of event because their entry fee does real good.
Where Does It Happen?
The race starts and finishes around the Student Aquatic Center at the University of Tennessee. The address is 2106 Andy Holt Avenue, Knoxville, Tennessee.
This building has a long story. It was finished in May 1967 and cost 1.7 million dollars. It has two Olympic size pools, one indoor and one outdoor. Both pools are heated. The center has also trained Olympic swimmers. It was a training center for the 1972 US Olympic women’s team, and it hosted training for Olympic teams in 1980 and 1996. In 1982, it also hosted a famous swim meet between the United States and the Soviet Union.
So when you swim at the TriDeltathon, you are swimming in a pool with real history.
The Race Course: Swim, Bike, Run
Let us look at each part. The numbers below come from the official race pages. Race details can change from year to year, so always read the newest page before you sign up.
Part 1: The Swim (400 meters)
The swim is 400 meters. The race pages for later years describe it as an indoor pool swim. The older 2014 page described an outdoor pool, so the plan has changed over time. Check the current page to be sure.
Here is how the swim works. You do not start all at the same time. Swimmers enter the water one at a time. The race page says the gap between swimmers is about 7 seconds. Older pages said 5 seconds. Either way, the idea is the same: nobody fights for space at the start.
Swimmers are placed in order from fastest to slowest. The order comes from the 400 meter time you give when you sign up. So the fastest swimmers go first, and the slower swimmers go later. This is smart because it keeps faster people from having to pass slower people in the water.
The swim uses eight lanes, and each lane is 50 meters long. At the end of a lane, you duck under the rope and move over to the next lane. You go up one lane, down the next, and so on, until you have done 400 meters.
Part 2: The Bike (6 miles)
After the swim, you go to the bike area and get on your bike. The ride is about 6 miles. It is a tour of the University of Tennessee campus and Neyland Drive.
The 2014 course page said the ride was two laps around campus. It also said there were a few rolling hills and one flat part along Neyland Drive. Six miles is short, so even a casual cyclist can finish it. You do not need a fancy racing bike. Many people use a normal road bike or a hybrid bike.
Always wear a helmet. Check your tires and brakes the day before the race.
Part 3: The Run (3 miles)
The last part is a 3 mile run across campus. You run past Neyland Stadium and Thompson-Boling Arena. These are two of the most famous buildings at the university.
The 2014 page said the run was “fairly hilly,” with water stops at miles 1 and 2. After a swim and a bike ride, your legs may feel heavy. That is normal. Go at a steady pace and enjoy the crowd and the campus.
Individual or Relay?
You can join the TriDeltathon in two ways.
Individual: You do all three parts yourself. The race page says individuals must be between 10 and 99 years old.
Relay: You make a team. Each person does one part. For example, one friend swims, one rides and one runs. Relay racers can be between 7 and 99 years old, so even younger people can take part.
Relay teams are a great way to try the sport without doing all three parts. They are also fun for families, friends and classmates.
Race Day Schedule
The race has been held on a Sunday in April in many years. Here are some examples from the race pages:
- April 14, 2013
- April 13, 2014
- April 19, 2020 (this race was canceled)
On race day, the older race page said packets could be picked up starting at 6:30 in the morning at the Student Aquatic Center. Same-day registration was also open at that time. The race start time was 8:30 in the morning. The organizers expected about 350 people.
Remember that times can change. Plan to arrive early so you have time to find parking, pick up your packet, set up your bike and warm up.
How Much Does It Cost?
Prices change often. For a sense of what the race used to cost, here are the prices from the 2013 race page:
| Sign-up time | Individual | Relay |
|---|---|---|
| Early (before April 4) | $40 | $60 |
| Later (by April 13) | $55 | $75 |
| Day of the event | $65 | $90 |
Students got a $10 discount on an individual entry and $5 off each relay team member. These are old prices, so please check the newest sign-up page for today’s cost. The main lesson still holds: sign up early and you usually pay less.
What Happened in 2020?
The 2020 race was set for April 19. It was canceled because the University of Tennessee moved to online classes for the rest of the school year. The organizers said they tried to find a later date, but it was not possible.
They offered five choices to people who had already signed up:
- Let the race keep the entry fee to help the charity.
- Move the entry to the 2021 race.
- Move the entry to another Race Day Events sprint triathlon.
- Use the entry as credit for a longer Race Day triathlon.
- Ask for a refund.
The organizers even dropped their normal no-refund rule that year. It was a fair and kind way to handle a hard situation.
The TriDeltaRUN: A Newer Sister Race
Tri Delta and Race Day Events also host a 5K run called the TriDeltaRUN. The race page for April 21, 2024 said it was the third year of this race. Another listing says the 2026 race, on April 19, is the fifth year.
The TriDeltaRUN starts at 10 in the morning. In 2024, it was held at UT Gardens, and most of the course was on the Third Creek greenway. Runners got a soft cotton shirt, and there were awards for overall winners and age groups. There were also snacks after the race. The money goes to the same cause: East Tennessee Children’s Hospital and Camp Eagle’s Nest.
If you like running more than swimming, this might be a good first step.
One honest note: when I checked the public race listings, I found full details for the TriDeltathon up to the 2020 page, but the newest listing I found for 2026 was the TriDeltaRUN. Before you plan your trip, please visit the official race website (racedayevents.net/trideltathon) to see if the triathlon is on the calendar this year.
Tips for Your First TriDeltathon
Here are some simple tips that can help you feel ready.
Practice the swim in a pool
Since the swim is the first part, it sets the mood for your whole race. Try swimming 400 meters (16 laps of a 25 meter pool, or 8 lengths of a 50 meter pool) a few times before race day. Rest when you need to, but try to keep a steady pace. Remember that you will move from lane to lane by ducking under the rope, so practice that move if you can.
Be honest about your swim time
Because swimmers start in order from fastest to slowest, your estimated time matters. If you give a time that is too fast, you may start in front of faster swimmers and feel pressure. Give a real, honest time.
Practice going from swim to bike
The move from the swim to the bike is called a transition. Many beginners lose time here. Try it at home. Dry off, put on your shoes and helmet, and get on your bike. A short “brick” workout, where you bike and then run right away, also helps your legs get used to the change.
Pack the night before
Make a simple checklist. Good things to bring are:
- Swimsuit and goggles
- Towel
- Helmet
- Bike shoes or running shoes
- A water bottle
- Your race number and ID
- A small snack for after the race
Eat and drink well
Eat a light breakfast that you know sits well in your stomach. Drink water before the race and at the water stops on the run. Do not try new food on race day.
Have fun
The TriDeltathon is not a race for pro athletes. It is a friendly event for students, families and local people. Smile, thank the volunteers and enjoy the day.
Why Beginners Like Pool Triathlons
A pool triathlon has a few big benefits for new racers.
- Calm water. There are no waves, no current and no cold lake.
- Clear rules. The lanes and the one-at-a-time start make the swim easy to understand.
- Safe feeling. The water is shallow at the edges, and volunteers watch the pool.
- Easy practice. You can train at any pool near you.
- Short distances. A 400 meter swim, a 6 mile ride and a 3 mile run are not huge goals. Many people can reach them with a few weeks of training.
Because of these things, the TriDeltathon can be a good first step into the sport of triathlon.
Final Thoughts
The TriDeltathon is a simple, friendly race with a good heart. You swim 400 meters in a historic pool, ride 6 miles around the University of Tennessee campus, and run 3 miles past Neyland Stadium. The volunteers from Delta Delta Delta cheer you on, and your entry fee helps children in East Tennessee.
If you want to try a triathlon, this type of race is a gentle way to start. Check the official page for the newest date and prices, train a little each week, and bring a friend or a relay team. You might find that you love the sport.
Frequently Asked Questions
Is the TriDeltathon good for beginners?
Yes. The distances are short, the swim is in a heated pool, and swimmers start one at a time. You can also join a relay team and do only one part. The race pages say individuals can be age 10 and up, and relay members can be age 7 and up.
How long is each part of the TriDeltathon?
The swim is 400 meters, the bike ride is about 6 miles, and the run is about 3 miles. The bike and run go around the University of Tennessee campus. Course details have changed a little over the years, so check the newest race page before you go.
Where does the money from the race go?
The money goes to East Tennessee Children’s Hospital. A related race page also says it helps Camp Eagle’s Nest, a summer camp for children with cancer and rare blood disorders.
