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Triathlon Atlas

Half distance · 25 July 2027

IRONMAN 70.3 Maine

Augusta, 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
25 Jul 2027
Registration
Open
Swim venue
River
Average water temperature
24 °C
Bike profile
Rolling
Bike elevation gain
967 m
Run profile
Rolling
Run elevation gain
126 m
High air temperature
28 °C
Low air temperature
17 °C
Overall cut-off
8 h 30 min
Altitude
2 m
Swim start
Rolling start

Edition history

202626 Jul 2026Held
202527 Jul 2025Held
202428 Jul 2024Held
202330 Jul 2023Held
202231 Jul 2022Held
202129 Aug 2021Held
201925 Aug 2019Held
201826 Aug 2018Held
201727 Aug 2017Held

How the day is laid out

The swim is held in a river. An average of 24 °C is warm. Wetsuit use is commonly restricted above this point, and the swim becomes a question of heat more than of cold.

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 28 °C on race day. A spread of 11 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.

Down the Kennebec, then a climb out of the valley

The swim is point to point, downstream in the Kennebec River. ironman.com says it was the fastest IRONMAN 70.3 swim worldwide in 2023. From the exit, athletes climb to the top of the valley to reach transition 1. The bike heads south along the Kennebec through rural towns, with climbs and descents. The run is a single loop through Hallowell and Augusta, partly shaded along the river, and finishes by the State Capitol.

The river was measured at 23 °C in 2024 and 25 °C in 2025. The 2025 reading is above 24.5 °C, the limit for age-group wetsuits under the 2026 IRONMAN Competition Rules. Air highs reached 25 °C in 2024 and 30 °C in 2025.

Source: ironman.com, read on 27 October 2026.

Against the calendar

Where this race sits among the others

Ranks are computed across every race of the same distance.

  • Average water temperature

    24 °C · median 21 °C

    The 35th warmest of the 128 middle-distance races with a figure, across every circuit.

  • High air temperature

    28 °C · median 25 °C

    The 50th hottest of the 152 middle-distance races with a figure, across every circuit.

  • Bike elevation gain

    967 m · median 569 m

    The 21st hilliest of the 105 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.

37

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

68

races are held in North America. 12 of them in the same month as this one.

Questions about this race

When is IRONMAN 70.3 Maine 2027?
IRONMAN 70.3 Maine is held on 25 July 2027 in Augusta, United States. Registration is open on the official race page.
Is a wetsuit allowed at IRONMAN 70.3 Maine?
Most likely. The average water temperature is 24 °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 Maine?
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 hard is IRONMAN 70.3 Maine?
The bike course climbs about 967 m, the 21st hilliest of 105 half-distance races with a figure. The bike is labelled rolling and the run rolling. Expect highs of about 28 °C on race day.

Where to stay

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

Suggested stay: 23 Jul 2027 to 26 Jul 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