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Triathlon Atlas

Full distance · 18 September 2027

IRONMAN Maryland

Cambridge, United States

The race at a glance

Official race website
Circuit
IRONMAN
Distance
Full distance
Terrain
Road
Swim
3.8 km
Bike
180 km
Run
42.2 km
Date
18 Sept 2027
Registration
Open
Swim venue
River
Average water temperature
22 °C
Bike profile
Flat
Bike elevation gain
141 m
Run profile
Flat
Run elevation gain
80 m
High air temperature
26 °C
Low air temperature
20 °C
Overall cut-off
17 h
Entry fee, from
$810
Altitude
1 m
Swim start
Rolling start

Edition history

202619 Sept 2026Held
202520 Sept 2025Held
202421 Sept 2024Held
202316 Sept 2023Held
202217 Sept 2022Held
202118 Sept 2021Held
201928 Sept 2019Held
201829 Sept 2018Held
20177 Oct 2017Held
20161 Oct 2016Held

How the day is laid out

The swim is held in a river. The wetsuit call is made on race morning, against the temperature measured then.

The organiser publishes 3.8 km of swimming, 180 km on the bike and 42.2 km of running.

The swim uses a rolling start: athletes enter the water a few at a time. The water is usually around 22 °C at this time of year.

The bike course is flat, with about 141 m of climbing.

The run course is flat, with about 80 m of climbing.

Typical temperatures for the month run from 20 to 26 °C. The overall cut-off is 17 hours.

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 22 °C

    The 22nd coldest of the 48 full-distance races with a figure, across every circuit.

  • High air temperature

    26 °C · median 25 °C

    The 23rd hottest of the 52 full-distance races with a figure, across every circuit.

  • Bike elevation gain

    141 m · median 1130 m

    The flattest of the 43 full-distance races with a figure, across every circuit.

13

races of this distance pair a flat bike with a flat run, out of 55. 19 share the bike profile alone.

45

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

68

races are held in North America. 11 of them in the same month as this one.

Questions about this race

When is IRONMAN Maryland 2027?
IRONMAN Maryland is held on 18 September 2027 in Cambridge, United States. Registration is open on the official race page.
Is a wetsuit allowed at IRONMAN Maryland?
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 Maryland?
The course closes 17 h after the start. Intermediate cut-offs after the swim and the bike are in the athlete guide.
How hard is IRONMAN Maryland?
The bike course climbs about 141 m, the 1st flattest of 43 full-distance races with a figure. The bike is labelled flat and the run flat. Expect highs of about 26 °C on race day.
How much is the entry fee for IRONMAN Maryland?
Entries start at US$810 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: 16 Sept 2027 to 19 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