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Triathlon Atlas

Half distance · 12 September 2027

IRONMAN 70.3 Erkner

Erkner, 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
12 Sept 2027
Registration
Sold out
Swim venue
Lake
Average water temperature
20 °C
Bike profile
Flat
Bike elevation gain
50 m
Run profile
Flat
Run elevation gain
30 m
High air temperature
20 °C
Low air temperature
10 °C
Overall cut-off
8 h 30 min
Entry fee, from
€416
Altitude
38 m
First edition
2022
Swim start
Rolling start

Edition history

202613 Sept 2026Held
202514 Sept 2025Held
202415 Sept 2024Held
202310 Sept 2023Held
202211 Sept 2022Held

How the day is laid out

The swim is held in a lake. An average of 20 °C sits in the range where a wetsuit is both allowed and worth wearing for nearly everyone.

The bike leg is labelled flat and runs over 2 loops.

The run is labelled flat, over 4 laps.

A flat bike followed by a flat run is the most predictable combination on the calendar. It removes climbing and the descents that come with it, so power output stays constant for the whole bike leg and wind becomes the main variable.

Expect air between 10 °C and 20 °C on race day. A spread of 10 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.

Sold out for 2027, and cooler water than the average suggests

On 2 November 2026, ironman.com showed the 12 September 2027 race as sold out, with a button to be notified when places open. The swim is one loop of the Dämeritzsee from the Strandbad Erkner; half of the lake lies in Berlin and half in Brandenburg. The race page shows an average water temperature of 20 °C, but the race-day readings in its Historical weather table were 17 °C in 2024 and 19 °C in 2025, with no reading for 2026. Morning air lows were 8 to 12 °C over those three years.

Source: ironman.com, read on 2 November 2026.

Against the calendar

Where this race sits among the others

Ranks are computed across every race of the same distance.

  • Average water temperature

    20 °C · median 21 °C

    The 43rd coldest of the 128 middle-distance races with a figure, across every circuit.

  • High air temperature

    20 °C · median 25 °C

    The 16th coolest of the 152 middle-distance races with a figure, across every circuit.

  • Bike elevation gain

    50 m · median 569 m

    The 2nd flattest of the 105 middle-distance races with a figure, across every circuit.

43

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

45

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

160

races are held in Europe. 28 of them in the same month as this one.

Questions about this race

When is IRONMAN 70.3 Erkner 2027?
IRONMAN 70.3 Erkner is held on 12 September 2027 in Erkner, Germany. The race is sold out.
Is a wetsuit allowed at IRONMAN 70.3 Erkner?
Most likely. The average water temperature is 20 °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 Erkner?
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 Erkner?
The bike course climbs about 50 m, the 2nd flattest of 105 half-distance races with a figure. The bike is labelled flat and the run flat. Expect highs of about 20 °C on race day.
How much is the entry fee for IRONMAN 70.3 Erkner?
Entries start at €416 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: 10 Sept 2027 to 13 Sept 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