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Triathlon Atlas

Half distance · 16 May 2027

IRONMAN 70.3 Chattanooga

Chattanooga, United States

The race at a glance

Official race website
Circuit
IRONMAN
Distance
Middle distance
Terrain
Road
Swim
1.9 km
Bike
90 km
Run
21.1 km
Date
16 May 2027
Registration
Open
Swim venue
River
Average water temperature
22 °C
Bike profile
Rolling
Run profile
Rolling
Run elevation gain
191 m
High air temperature
29 °C
Low air temperature
17 °C
Overall cut-off
8 h 30 min
Entry fee, from
$540
Altitude
193 m
First edition
2015
Swim start
Rolling start

Edition history

202617 May 2026Held
202518 May 2025Held
202419 May 2024Held
202321 May 2023Held
202222 May 2022Held
202123 May 2021Held
201919 May 2019Held
201820 May 2018Held
201721 May 2017Held
201622 May 2016Held

How the day is laid out

The swim is held in a river, from a rolling start. An average of 22 °C is close to the threshold where wetsuit rules start to tighten. Plan for both answers and check the call on race morning.

The bike leg is labelled rolling.

The run is labelled rolling.

A rolling bike and a rolling run keep the effort changing all day, so pace by feel rather than by speed.

Expect air between 17 °C and 29 °C on race day. A spread of 12 degrees across the day matters as much as the peak, because what you wear at the swim exit is rarely what you want at the far end of the bike.

Against the calendar

Where this race sits among the others

Ranks are computed across every race of the same distance.

  • Average water temperature

    22 °C · median 21 °C

    The 62nd warmest of the 128 middle-distance races with a figure, across every circuit.

  • High air temperature

    29 °C · median 25 °C

    The 40th hottest of the 152 middle-distance races with a figure, across every circuit.

19

races of this distance pair a rolling bike with a rolling run, out of 159. 58 share the bike profile alone.

32

races across every distance fall in May, out of 354.

68

races are held in North America. 9 of them in the same month as this one.

Questions about this race

When is IRONMAN 70.3 Chattanooga 2027?
IRONMAN 70.3 Chattanooga is held on 16 May 2027 in Chattanooga, United States. Registration is open on the official race page.
Is a wetsuit allowed at IRONMAN 70.3 Chattanooga?
Most likely. The average water temperature is 22 °C, below the 24.5 °C limit up to which wetsuits are allowed for age-group athletes. The official call is made on race morning.
What is the cut-off at IRONMAN 70.3 Chattanooga?
The course closes 8 h 30 min after the start. Intermediate cut-offs after the swim and the bike are in the athlete guide.
How much is the entry fee for IRONMAN 70.3 Chattanooga?
Entries start at US$540 for an individual age-group entry, before service fees. Prices rise by tier as the race fills.

Where to stay

Hotels and rentals around the race venue, for the nights around race day.

Suggested stay: 14 May 2027 to 17 May 2027

The map is provided by Stay22. Bookings are made with the provider.

Races of the same distance in the same region

Entries are handled by the organiser

Registration and the athlete guide are on the official race page.

Open the official race page