IRONMAN 70.3 Chattanooga
About the race
IRONMAN 70.3 Chattanooga features a scenic course in Tennessee, showcasing a point-to-point downriver swim in the Tennessee River, a rolling bike leg through the countryside and north Georgia, and a run along the riverfront and park trails with strong community support.
Iconic yet accessible, the course challenges and inspires, welcoming first-time triathletes while calling seasoned competitors back again and again.
Event Highlights & Details:
- Swim: 1.4-mile fast downriver swim in the Tennessee River exiting at Ross's Landing Park.
- Bike: 56-mile rolling course heading 11 miles south of town before a 34-mile loop in north Georgia paralleling Lookout Mountain and passing through historic Chickamauga.
- Run: 13.1-mile two-loop course through downtown Chattanooga, The Tennessee Riverwalk, Veterans Bridge, North Shore, and Riverfront Parkway.
Historical Weather: High temperatures typically range from 83°F to 86°F (28°C–30°C), low temperatures from 56°F to 74°F (13°C–23°C), and average water temperatures around 72°F to 73°F (22°C–23°C).
What your entry includes
The course
Fast, downriver 1.4-mile swim in the Tennessee River exiting at Ross's Landing Park. A rolling 56-mile bike course taking riders 11 miles south of town into a 34-mile loop in north Georgia paralleling Lookout Mountain and through historic Chickamauga. A 13.1-mile run completing two loops through downtown Chattanooga, The Tennessee Riverwalk, Veterans Bridge, North Shore, and Riverfront Parkway, finishing at Ross's Landing.
ROKA Swim Course
Athletes will enter the water in a rolling start and head straight down the river for a 1.4 mile stretch before exiting at the beautiful Ross’s Landing Park. Spectators will have a great opportunity to watch the swim from the Veterans and Market Street Bridges and the Tennessee Riverwalk. The average water temperature is typically in the low 70 degrees Fahrenheit.
ZOOT Bike Course
The bike course takes riders 11 miles south of town before beginning a 34-mile loop in north Georgia. Athletes can expect incredible views as they parallel Lookout Mountain on this rolling course with great road surfaces. As athletes near the end of the loop, they will get the opportunity to ride through historic Chickamauga.
HOKA Run Course
Athletes will have a chance to see the Scenic City as they complete two loops through downtown Chattanooga, The Tennessee Riverwalk, Veterans Bridge, North Shore, and the beautiful Riverfront Parkway. The final stretch will bring down Riverfront Parkway to finish at Ross's Landing along the Tennessee River.
Run Course Update: 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.
Race weekend schedule
Location
City insight: Chattanooga
Chattanooga is a city in south-east Tennessee on the Tennessee River, surrounded by ridges and mountains, with a riverfront, a large outdoor scene and a well-known Ironman event. The climate is humid subtropical: summers (June to August) are hot and humid, autumn is mild and colourful, winters (December to February) are cool, and spring is warm. Spring and autumn are the best seasons for racing. Hills are a feature of the bike and run courses. The city has an airport, and Atlanta is about two hours away.
Know from the athletes
Good to know
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Are two-person Relay Teams permitted?
Yes. A two-person relay can complete the race with any combination of disciplines. Relay teams may later add a third person if they wish.
Can all team members cross the finish line together?
No. Only the run leg relay participant can cross the finish line. If other team members cross the finish line with the runner, the team receives a disqualification.
Can I be a team member on two different relay teams?
No. Team members are only allowed to compete on one relay team.
What will a Relay Team need to bring to Athlete Check-In?
All relay team members must have a photo I.D. If not yet registered to a team, do so at the Solutions table within athlete check-in. Bring a credit card to pay for the USAT one-day license if not a USAT member.
How do I request to switch a Relay Member?
Contact the event email address to make relay team member changes, providing details of the member to cancel and the full name and email address of the new member.
Do all Relay Team Members need to attend Athlete Check-In?
Yes. All teams MUST arrive together for Athlete Check-In to ensure all materials are accounted for and sign individual waivers.
What is the Withdrawal Policy for a Relay Team?
Relay captains are eligible for a partial refund of the registration fee according to the withdrawal policy.
Does each Relay Team Member receive a timing chip?
No. The relay team receives one timing chip at bike check-in which acts as a baton passed between team members.
Do all Relay Team Members need to be the same age and gender?
No. Relay team members can be comprised of a mix of gender and age. All participants must be 18 years of age on race day.
If a team member fails to make the course cut-off, can other team members still complete their leg of the race?
No. Failure to complete the swim or bike course within the time constraints results in a DNF for the entire team.
If I am the swimmer or cyclist, how do I receive my finisher medal and finisher items?
The runner will collect all 3 finisher medals and hats for the entire relay team.
How does transition work?
If the event provides a relay pen, only the cyclist is allowed in transition and must receive the chip before un-racking the bike. If there is no relay pen, the cyclist and runner meet team members at the bike rack.