For the 11th consecutive year, Chattanooga, Tennessee, is opening its streets, river, and rolling Georgia hills to thousands of athletes from around the world — and this May, the show promises to be bigger than ever.
Picture this: it's just before 7 a.m. on a Sunday morning. The Tennessee River glitters in the early light, the downtown skyline rises behind you, and over 3,300 athletes from 64 countries are about to do something most people only dream about — swim, bike, and run their way through one of the most scenic half-distance triathlon courses in North America.
That's the magic of the 70.3-distance Chattanooga Triathlon, back for its 11th year of racing on Sunday, May 17, 2026. Whether you're a seasoned age-grouper chasing a World Championship slot, a first-time spectator curious about what all the fuss is about, or a fitness enthusiast wondering if this is the year you finally sign up — this guide has everything you need.
What Is a 70.3-Distance Triathlon? (A Quick Primer)
Before we dive into the specifics, let's cover the basics — because "70.3" is more than just a number on a bumper sticker.
A 70.3-distance triathlon — sometimes called a "half-distance" — covers 1.9 km (1.4 miles) of swimming, 90 km (56 miles) of cycling, and 21.1 km (13.1 miles) of running. The name comes from the total mileage: 70.3 miles. It's a serious endurance challenge that typically takes athletes anywhere from 4 to 8+ hours to complete, depending on fitness level and course difficulty.
This is not a beginner's race — but it is absolutely achievable. The fact that Chattanooga's field spans athletes aged 18 to 79 tells you everything you need to know about who shows up to these events. For insights into what constitutes competitive performance at this distance, check out our analysis of what makes a good 70.3 time.
The Course: Scenic Beauty Meets Athletic Challenge
Chattanooga didn't earn the nickname "Scenic City" by accident. The race course leans hard into the region's natural and historical assets — and the result is one of the most memorable race experiences in the sport.
🏊 The Swim: Riding the Tennessee River Current (1.4 Miles)
The race kicks off with a downriver swim in the Tennessee River, starting 1.4 miles upstream from Ross's Landing. This is a significant advantage for athletes: the natural current helps carry swimmers downstream, making this one of the faster swim legs on the half-distance circuit.
- Pro race start: 6:50 a.m.
- Age group rolling start: 7:03 a.m.
A rolling start means athletes enter the water in waves based on their predicted swim time, reducing congestion and making for a smoother, safer experience — especially for those newer to open-water racing.
Spectator tip: Head to the swim start area early. Watching hundreds of athletes enter the Tennessee River at sunrise is genuinely one of the most striking things you'll see at any sporting event.
🚴 The Bike: Through the Heart of Chickamauga Country (56 Miles)
Once athletes exit the water at Ross's Landing and transition into their bike gear, they head south into northern Georgia and the historic Chickamauga region. The terrain here is rolling — not flat, not mountainous — which means it rewards strong cyclists but doesn't punish those with a well-balanced fitness base.
Riding through the Chickamauga battlefield adds a quiet sense of gravitas to the leg. This is ground steeped in American history, and on race day, it becomes the backdrop for thousands of personal athletic stories unfolding in real time.
The bike course is where races are often won and lost at this distance. Strong riders can build significant time gaps here, but going out too hard will cost you dearly on the run.
🏃 The Run: Downtown Chattanooga's Living Finish Line (13.1 Miles)
The final 13.1 miles bring athletes back into the heart of Chattanooga, weaving through downtown streets and along the Tennessee Riverwalk. The urban setting transforms the run into a spectator-friendly experience — crowds line the course, music pumps from aid stations, and the energy builds as athletes approach the finish.
One notable change for 2026: due to ongoing construction on the Walnut Street Bridge, the run course will follow a temporary detour and will not cross the bridge this year. Course adjustments like this are common in major events and reflect the kind of adaptive planning that keeps a race running smoothly after 11 years.
The Athletes: Elites, Age Groupers, and Everyone in Between
The Professional Field: $40,000 on the Line
Top-tier professionals will race as part of the Pro Series, competing for a $40,000 total professional prize purse. This level of prize money attracts genuinely world-class athletes — people who train 25–30+ hours a week and have podium finishes at major international events.
Men's field highlights:
- Sam Long (USA) — Coming off a victory at the Gulf Coast race just one week prior, Long arrives in Chattanooga looking to go back-to-back. A powerful cyclist with explosive run ability, he's one of the most exciting racers in the sport right now.
- Matt Hanson (USA) — A consistent, experienced competitor known for his strength on rolling terrain — exactly the kind of course Chattanooga delivers.
- Cameron Wurf (AUS) — The former professional cyclist brings elite bike power to every race he enters and is always a threat on courses with significant cycling terrain.
Women's field highlights:
- Grace Alexander (USA) — Like Sam Long on the men's side, Alexander is coming off a Gulf Coast victory and has her eyes on consecutive wins. She'll be the one to beat.
- Paula Findlay (CAN) — A former world-ranked triathlete who has rebuilt her career into a formidable force at the half-distance level. Learn more about her comeback story in our profile of her recent performances.
- Jackie Hering (USA) — Solid domestic talent who competes well on technical, mixed-terrain courses.
For the full professional start list, visit ironman.com/pro-athletes.
The Age Group Field: 3,300+ Stories Happening Simultaneously
Here's what makes events like this truly special: the pros finish before most age groupers are even off the bike. The real magic of race day is the sheer diversity of human beings out on that course at the same time.
- 3,300+ total athletes competing
- 64 countries represented
- 45 U.S. states represented
- Ages 18 to 79 — yes, 79
Athletes from Latin America, including from Mexico, Brazil, and beyond, have historically been well-represented in the Chattanooga field. The half-distance format has become a signature goal for triathletes across the Americas, and Chattanooga's accessible, well-organized race experience makes it a popular destination choice for international competitors.
For top age-group finishers, the stakes go beyond personal achievement. At 4 p.m. on race day, the World Championship Slot Allocation and Rolldown Ceremony awards qualifying spots to the 70.3-distance World Championship — one of the most coveted goals in amateur triathlon.
The Race Weekend Schedule: Everything, Hour by Hour
Planning to attend? Here's your complete timeline:
Friday, May 15
| Time | Event | Location |
|---|---|---|
| 2 p.m. – 7 p.m. | Athlete Check-In | Ross's Landing |
| 2 p.m. – 7 p.m. | Village Open | Ross's Landing |
Saturday, May 16
| Time | Event | Location |
|---|---|---|
| 9 a.m. – 4 p.m. | Athlete Check-In | Ross's Landing |
| 9 a.m. – 4 p.m. | Village Open | Ross's Landing |
| 9:30 a.m. – 4:30 p.m. | Mandatory Bike Check-In | Ross's Landing |
Sunday, May 17 — Race Day
| Time | Event | Location |
|---|---|---|
| 4:30 a.m. – 6:15 a.m. | Transition Area Open | Ross's Landing (T1) |
| 4:30 a.m. – 6:45 a.m. | Athlete Shuttle Bus to Swim Start | Departs Ross's Landing |
| 6:50 a.m. | Pro Race Start | 1.4 miles upriver from Ross's Landing |
| 7:03 a.m. | Age Group Rolling Start | 1.4 miles upriver from Ross's Landing |
| 8 a.m. – 4 p.m. | Village & Official Store | Ross's Landing |
| 4 p.m. | Awards Ceremony + World Championship Slot Allocation | Ross's Landing |
Spectator Guide: How to Make the Most of Race Day
You don't need to be racing to have an incredible experience on May 17. Here's how to spectate like a pro:
Best Viewing Spots
- Swim start area (1.4 miles upriver from Ross's Landing) — Arrive before 6:30 a.m. to stake out a good spot. The pro start at 6:50 a.m. is electric.
- Ross's Landing transition zone — Watch athletes exit the water and transform into cyclists in minutes. It's a fascinating, chaotic, wonderful thing to witness.
- Downtown Chattanooga run course — Pick a spot along the Tennessee Riverwalk and cheer. Athletes are usually in various stages of suffering and gratitude simultaneously — your energy genuinely helps.
- Village at Ross's Landing — Free and open to the public Friday through Sunday. Think of it as the social hub of the entire weekend: vendor booths, official merchandise, community atmosphere.
Spectator Tips
- Bring a sign. Corny signs get the loudest cheers. Trust the process.
- Move between spots. If you arrive for the swim, you have time to relocate to the run course before the top amateurs come through.
- Dress in layers. A 4:30 a.m. morning on the Tennessee River in May can surprise you with its chill.
- Plan transportation early. Downtown Chattanooga gets busy on race morning.
Thinking About Racing? Here's What You Should Know
The 70.3 distance is the most popular entry point for athletes stepping up from shorter races like Olympic-distance triathlons. Most coaches recommend a 12–20 week build specifically for the half-distance, depending on your current base. To prepare effectively, consider exploring AI-powered training apps that can customize your preparation.
Here's what the Chattanooga course rewards:
- Comfortable open-water swimmers who can relax in current-assisted conditions
- Consistent, measured cyclists who resist going all-out on the rolling Chickamauga hills
- Runners who pace well — the 13.1-mile run will expose any athlete who overcooked the bike
If you're eyeing a future start line — whether at Chattanooga or another 70.3-distance race — getting your gear sorted early is a real advantage. A quality triathlon suit is essential for comfort during the long hours on course. For running, consider investing in quality running shoes that have been tested on long distances. You'll also want to stock up on electrolyte supplements for proper race day fueling. Already racing and looking to upgrade? Browse our full selection of triathlon gear and equipment.
To explore registration and entry options for the 2026 race, visit ironman.com.
Chattanooga's 11-Year Legacy: Why This City Gets It Right
Eleven years is not an accident. It's a statement.
Hosting a race of this scale — 3,300+ athletes, 64 countries, a world-class professional field — requires deep infrastructure, experienced volunteers, community buy-in, and a genuine love for endurance sport. Chattanooga has built all of that, and then some.
The Tennessee River provides a natural swim venue that few cities in the world can match. The proximity to the Chickamauga region gives the bike course a historical dimension that makes it memorable rather than just challenging. And the downtown finish, centered on Ross's Landing, turns the end of the race into a civic celebration.
This is what happens when a city fully commits to becoming an endurance sports destination. Chattanooga has earned its place on the global triathlon map — and every May, it proves why.
Frequently Asked Questions
- Q: Can I watch the race for free?
- Yes. The Village at Ross's Landing is free and open to the public on Friday, Saturday, and Sunday. Multiple points along the swim, bike, and run courses are accessible to spectators at no cost.
- Q: What time should I arrive to see the swim start?
- The pro race starts at 6:50 a.m. and age groupers begin at 7:03 a.m. Aim to arrive at the swim start area by 6:15–6:30 a.m. for a good viewing position.
- Q: Is this race a World Championship qualifier?
- Yes. Top age-group finishers earn qualifying slots to the 70.3-distance World Championship. The rolldown ceremony takes place at 4 p.m. on race day at Ross's Landing.
- Q: What's the difference between a full-distance and a 70.3-distance triathlon?
- A 70.3 (half-distance) covers 1.9 km swim / 90 km bike / 21.1 km run. A full-distance triathlon doubles every segment: 3.8 km swim / 180 km bike / 42.2 km run.
- Q: Why isn't the run course crossing the Walnut Street Bridge this year?
- Ongoing construction on the bridge has required a temporary course detour for the 2026 race. The overall run distance and finish location remain the same.
What is the 70.3-distance Chattanooga triathlon?
The 70.3-distance Chattanooga triathlon is a triathlon event consisting of a 1.4-mile swim, a 56-mile bike ride through northern Georgia, and a 13.1-mile run through downtown Chattanooga, showcasing the city's scenic views.
When will the 2026 70.3-distance Chattanooga triathlon take place?
The 2026 70.3-distance Chattanooga triathlon will take place on Sunday, May 17, 2026.
What changes are planned for the run course in 2026?
Due to ongoing construction on the Walnut Street Bridge, the 2026 run course will follow a temporary detour and will not cross the bridge this year.
How many athletes are expected to participate in the event?
Over 3,300 athletes from around the world are expected to participate in the 2026 70.3-distance Chattanooga triathlon, representing 64 countries and 45 U.S. states.
What is the professional prize purse for the 70.3-distance Chattanooga triathlon?
The 2026 edition of the 70.3-distance Chattanooga triathlon will have a professional prize purse of $40,000, attracting top triathletes to compete.
Where will athlete check-in and Village be located?
Athlete check-in and the Village will be located at Ross's Landing, operating on Friday, May 15, and Saturday, May 16, prior to race day.
Mark Your Calendar
The 70.3-distance Chattanooga Triathlon takes place on Sunday, May 17, 2026, with the Village open to the public starting Friday, May 15. Whether you're racing, cheering, or simply soaking in one of the great sporting events, Chattanooga is the place to be!
