TriDeltathon was a pool-based triathlon held at the University of Tennessee in Knoxville, Tennessee. Athletes swam 400 meters indoors, rode a bike for six miles, and then ran three miles. The race was linked to the Delta Delta Delta sorority and raised money for East Tennessee Children’s Hospital.
The 2020 race was canceled. A related event called TriDeltaRUN, a 5K run, was later held on April 19, 2026. No date has been confirmed for the original swim-bike-run race to return.
The old race details are worth a closer look. The swim used timed starts inside a pool, and the bike and run stages stayed close to campus. Some old course maps also show distances that do not match the written race description. Here is what the listings say, and where they stop short.
What Was TriDeltathon?
TriDeltathon was a local swim-bike-run race in Knoxville. Its main venue was the University of Tennessee Student Aquatic Center. Athletes started with an indoor swim, then moved outside for the bike and run.
The race had two types of entry. Individual athletes did all three parts on their own. Relay teams split the swim, bike, and run between team members, so people could race alone or with friends.
Delta Delta Delta, also called Tri Delta, was tied to the event, and its volunteers helped run it. The old race description named East Tennessee Children’s Hospital as the charity.
That description also called TriDeltathon the oldest running pool triathlon in the country. This is the event’s own claim. Nothing found so far proves it as a national record, so it is safest to report it as what the race said about itself.
TriDeltathon Race Details
The table below comes from the old race listing. It shows how the original triathlon was set up.
| Race detail | Historic information |
|---|---|
| Event name | TriDeltathon |
| City | Knoxville, Tennessee |
| Main venue | University of Tennessee Student Aquatic Center |
| Swim distance | 400 meters, indoor pool |
| Bike distance | 6 miles |
| Run distance | 3 miles |
| Entry options | Individual and relay |
| Age range | 10 and up for individuals, 7 and up for relay members |
| Charity | East Tennessee Children’s Hospital |
| USAT status | Not USAT-sanctioned, according to the listing |
| 2020 edition | Canceled |
These details describe the older triathlon. They are not sign-up information for a race that is coming up. Do not use them for registration unless a new listing confirms them.
TriDeltathon Course: Swim, Bike, and Run
The original course had three parts. The swim was the most unusual one. The bike and run took athletes outside, around the university area.
The 400-Meter Pool Swim
The swim took place at the Student Aquatic Center. Many triathlons start with a crowd of swimmers entering open water together. TriDeltathon did not. Each swimmer started on their own, inside a pool.
Swimmers were ordered by their estimated 400-meter swim times. They entered the water about seven seconds apart. Each one swam a 50-meter lane, ducked under a rope at the end, and moved on to the next lane. They kept going until they had finished 400 meters.
So the swim was more than a simple 400 meters in a pool. The timed starts and the rope system were part of how the race handled this stage.
The 6-Mile Bike Course
After the pool, athletes got on their bikes. The race description lists a six-mile ride around the University of Tennessee campus and the Neyland Drive area. This stage connected the indoor swim to the final run.
There is one oddity. The written description says six miles, but a route map linked from the old listing is titled as a three-mile cycling route. The listing does not say why.
Because of this, six miles is best reported as the advertised race distance. The shorter map does not prove the bike stage was only three miles.
The 3-Mile Campus Run
The last stage was a three-mile run around campus. The listing names Neyland Stadium and Thompson-Boling Arena as landmarks on the route. These landmarks also help separate this course from the later TriDeltaRUN route.
The run has a small mismatch too. The linked running map shows about 3.2 miles, while the race description says three miles. The race description lists three miles, while the linked map shows about 3.2 miles. The exact course distance remains unclear.
A map and a written description do not always agree. For the TriDeltathon course, the written distances are the ones to rely on.
Where Was TriDeltathon Held?
The race was based at the University of Tennessee Student Aquatic Center, at 2106 Andy Holt Avenue, Knoxville, Tennessee 37996. The indoor pool there was used for the swim.
An older listing gave an 8:30 a.m. start time. It also mentioned overall, age-group, and relay awards, plus special pricing for students. These come from a past listing, so they should not be read as rules for a future race.
The same listing expected about 350 participants. That was an estimate made before the race. It does not tell us how many people actually took part.
TriDeltathon History and the 2020 Cancellation
Old race pages give some clues about TriDeltathon’s history. They do not confirm every part of the timeline.
A Fleet Feet Knoxville page described the 2019 race as the event’s 35th year. The 2020 race was described as the 36th year. Both pages gave the same format: a 400-meter pool swim, a six-mile bike ride, and a three-mile run.
These numbers show that the race was presented as a long-running event. But an edition number is not proof of a starting year. No source found so far confirms when the first TriDeltathon was held.
The 2020 race was set for April 19, 2020. It was canceled after the University of Tennessee, Knoxville, moved to online learning for the rest of the school year. The organizers said they could not secure a later date.
People who had signed up were given several choices. They could give their entry fee to the charity, move to a future TriDeltathon, move to another Race Day Events triathlon, take a credit, or ask for a refund. These choices applied only to that canceled race. They are not a current policy.
The notice confirms the 2020 race did not go ahead. It does not say the event was canceled for any other reason, such as low sign-ups or cost. It also does not say the race ended for good.
Is TriDeltathon Still Held?
No confirmed return date is listed for the original TriDeltathon. The last planned edition confirmed by the archived race listing was scheduled for 2020, but it was canceled. The latest related event identified here is TriDeltaRUN, a separate 5K running event.
Nothing found shows when the swim-bike-run race was last held. Nothing shows that it came back after 2020 either.
An old registration page can still teach you about the race’s past distances, venue, and entry types. But an old page is not proof of a new race. The same goes for a date shown in a race directory. Some directory pages show estimated dates and old information, so they are not good proof.
If you want to race a future TriDeltathon, look for a new listing from the organizer first. Race Day Events and RunSignup are the places to check. Until a listing or a direct statement says otherwise, the future of the original triathlon is unconfirmed.
TriDeltathon vs. TriDeltaRUN
The two names look alike, and both are tied to the same local charity effort. But the race formats are very different.
| Feature | Historic TriDeltathon | TriDeltaRUN |
|---|---|---|
| Event type | Triathlon | 5K run |
| Swim | 400 meters, indoor pool | None listed |
| Bike | 6 miles | None listed |
| Run | 3 miles | 5K |
| Main venue | UT Student Aquatic Center | UT Gardens, 2518 Jacob Drive |
| Route | Campus and Neyland Drive | Mostly along Third Creek Greenway |
| Latest date found | 2020 race canceled | April 19, 2026 |
| Charity | East Tennessee Children’s Hospital | East Tennessee Children’s Hospital and Camp Eagles Nest |
TriDeltathon asked athletes to swim, bike, and run. TriDeltaRUN is a running event with no swim or bike stage.
The 2026 TriDeltaRUN was set for Sunday, April 19, 2026, at the UT Gardens on the university’s agriculture campus. Most of the course followed the Third Creek Greenway. That is a different setting from the pool start and campus course of the triathlon.
Nothing found proves that TriDeltaRUN is an official new name for TriDeltathon. It is more accurate to call it a related event with a different format.
TriDeltathon Results and Past Participants
A results archive for TriDeltathon is online. It has year and division options, including 2015 and 2019. It also has links for individual results and top finishers.
But a year in a menu does not prove that every result from that year is there. There is no complete, verified list of winners, finishing times, or total participants.
If you quote a result, match it to the right year and division first. Individuals and relay teams are listed in different categories. A result from one group should not be used to describe the whole race.
Also check which event the results belong to. TriDeltathon was a triathlon, and TriDeltaRUN is a 5K. Their results should never be mixed together.
TriDeltathon’s Charity Connection
The old TriDeltathon description named East Tennessee Children’s Hospital as the charity for the race. Delta Delta Delta volunteers were also tied to the event.
The 2026 TriDeltaRUN listing names East Tennessee Children’s Hospital and Camp Eagles Nest. Camp Eagles Nest is associated with children who have cancer and rare blood disorders. That is the charity wording for the 5K only. It should not be used to say how much the triathlon raised.
No verified total has been found for the money raised across TriDeltathon’s history. There is also no confirmed year-by-year figure. Any exact amount needs a clear record that names both the amount and the race year.
A charity link does not show how much was raised or how the money was used. So the safe statement is this: East Tennessee Children’s Hospital was named as the charity in the historic race description.
Frequently Asked Questions About TriDeltathon
What was TriDeltathon?
TriDeltathon was a pool-based triathlon in Knoxville, Tennessee. It had a 400-meter indoor swim, a six-mile bike ride, and a three-mile run.
Where was TriDeltathon held?
The race used the University of Tennessee Student Aquatic Center at 2106 Andy Holt Avenue in Knoxville. That is the venue listed for the original triathlon. It is not a confirmed location for any future race.
How did the TriDeltathon swim work?
Swimmers were ordered by their estimated 400-meter times and started about seven seconds apart. They swam 50-meter lanes and passed under a rope at the end of each lane.
How long were the TriDeltathon bike and run stages?
The race description lists a six-mile bike ride and a three-mile run. Linked route maps show slightly different distances. So those maps do not fully confirm the length of the course.
Why was TriDeltathon canceled in 2020?
The April 19, 2020 race was canceled after the University of Tennessee, Knoxville, moved to online learning for the rest of the school year. The organizers said they could not secure a later date.
Is TriDeltathon the same as TriDeltaRUN?
No source confirms that they are one event under two names. TriDeltathon was a swim-bike-run race. TriDeltaRUN is listed as a 5K run.
Where can I find TriDeltathon race results?
A results archive has year and division choices, including 2015 and 2019. Check each result against the right year and division before you share it.
What charity did TriDeltathon support?
The historic description named East Tennessee Children’s Hospital. The 2026 TriDeltaRUN listing also names Camp Eagles Nest. That does not confirm a fundraising total for the triathlon.
Is a new TriDeltathon race date confirmed?
No. No confirmed return date is listed for the original triathlon. An old registration page or a directory estimate is not proof that the race is coming back.
Final Thoughts on TriDeltathon
TriDeltathon is best remembered for its race details. It had a 400-meter indoor swim, timed starts, a rope between lanes, and bike and run stages near campus. The mismatched map distances are a good reminder to read old race pages with care.
The old listings describe a long-running Knoxville race and confirm that the 2020 edition was canceled. They do not give a starting year, a full set of results, a charity total, or a return date.
TriDeltaRUN adds useful context. It has a similar name and a local charity link. But it is a 5K, not the original swim-bike-run course. Until the organizer lists a new date, the future of the original TriDeltathon stays unconfirmed.
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