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Triathlon Atlas

Half distance · 29 August 2027

IRONMAN 70.3 Duisburg

Duisburg, Germany

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
29 Aug 2027
Registration
Sold out
Swim venue
Lake
Average water temperature
21 °C
Bike profile
Flat
Bike elevation gain
120 m
Run profile
Rolling
Run elevation gain
30 m
High air temperature
25 °C
Low air temperature
16 °C
Overall cut-off
8 h 30 min
Altitude
38 m
First edition
2021
Swim start
Rolling start

Edition history

202616 Aug 2026Held
20257 Sept 2025Held
20241 Sept 2024Held
20236 Aug 2023Held
202228 Aug 2022Held
202129 Aug 2021Held

How the day is laid out

The swim is held in a lake. An average of 21 °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 flat.

The run is labelled rolling.

A flat bike ahead of a rolling run is a common pairing. It rewards a steady bike and makes a bike ridden too hard show up on the run.

Expect air between 16 °C and 25 °C on race day. A spread of 9 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

    21 °C · median 21 °C

    The 58th coldest of the 128 middle-distance races with a figure, across every circuit.

  • High air temperature

    25 °C · median 25 °C

    The 71st coolest of the 152 middle-distance races with a figure, across every circuit.

  • Bike elevation gain

    120 m · median 569 m

    The 8th flattest of the 105 middle-distance races with a figure, across every circuit.

6

races of this distance pair a flat bike with a rolling run, out of 159. 53 share the bike profile alone.

42

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

160

races are held in Europe. 32 of them in the same month as this one.

Questions about this race

When is IRONMAN 70.3 Duisburg 2027?
IRONMAN 70.3 Duisburg is held on 29 August 2027 in Duisburg, Germany. The race is sold out.
Is a wetsuit allowed at IRONMAN 70.3 Duisburg?
Most likely. The average water temperature is 21 °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 Duisburg?
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 Duisburg?
The bike course climbs about 120 m, the 8th flattest of 105 half-distance races with a figure. The bike is labelled flat and the run rolling. Expect highs of about 25 °C on race day.

Where to stay

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

Suggested stay: 27 Aug 2027 to 30 Aug 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