Course
Course
The swim is in the Tennessee River. The bike leg covers rolling terrain and the run follows Chattanooga's riverwalk, which the tourism office describes as friendly to spectators.
IRONMAN 70.3 World Championship 2027
- Date
- Saturday, August 28, 2027
- Location
- Chattanooga, Tennessee
Go to the race website
Registration details are on the race's own site.
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Events and entry fees
| Event | Distance | When | Entry fee | Cap |
|---|---|---|---|---|
| Half Iron | Half Iron Triathlon | Aug 28, 2027 | See registration | – |
Fees and dates are from the race's official website on the date shown below; confirm them there before you register.
Race day planning
Light and altitude
Sunrise on race morning is at about 7:10 AM. The start sits about 930 feet above sea level.
Fees exclude processing fees. Comparisons use current entry fees and published results from races nearby.
Start location and course
Chattanooga, TN
The pin marks the address the race lists, which is usually the start. The organizers have not shared a course map with us yet.
Typical race-day weather
Around August 28 the day usually runs from 68°F at dawn to 89°F in the afternoon, with measurable rain on about 13% of days. Cold snaps dip to 63°F and hot years reach 96°F.
Based on 75 days within a week of the date over the last 5 years, from historical weather for the start area. Not a forecast.
Race guide
What athletes should know about IRONMAN 70.3 World Championship, in brief, from the official race website.
Facts on this page come from the race's official website (visitchattanooga.com/media/news-releases/post/chattanooga-selected-as-host-for-the-2027-ironman-world-championship), checked Oct 7, 2026. Confirm dates and fees there before you travel.
Race details
- Where
- Chattanooga, TNMap
- Course
- Road
- Start elevation
- About 930 feet
- Distances
- Half Iron Triathlon
Organize this race? Add details or a correction
Quick answers
- When is IRONMAN 70.3 World Championship?
- Saturday, August 28, 2027.
- How much does it cost?
- See the registration page for current pricing.
- What distances are offered?
- Half Iron Triathlon.
- Where does it start?
- Chattanooga, TN.
About the race
The 2027 IRONMAN 70.3 World Championship is held in Chattanooga over two days, August 28 and 29. Athletes swim in the Tennessee River, ride rolling terrain and run along the city's riverwalk. About 7,000 professional and age-group qualifiers are expected.