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Triathlon Atlas

Half distance · 6 June 2027

IRONMAN 70.3 Bolton

Bolton, United Kingdom

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
6 Jun 2027
Registration
Sold out
Swim venue
Lake
Average water temperature
19 °C
Bike profile
Rolling
Bike elevation gain
840 m
Run profile
Rolling
Run elevation gain
214 m
High air temperature
16 °C
Low air temperature
9 °C
Overall cut-off
8 h 30 min
Entry fee, from
£360
Altitude
105 m
First edition
2021
Swim start
Rolling start

Edition history

20267 Jun 2026Held
20258 Jun 2025Held
202430 Jun 2024Held
202126 Sept 2021Held

How the day is laid out

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

The organiser publishes 1.9 km of swimming, 90 km on the bike and 21.1 km of running.

The swim uses a rolling start: athletes enter the water a few at a time. The water is usually around 19 °C at this time of year.

The bike course is rolling, with about 840 m of climbing.

The run course is rolling, with about 214 m of climbing.

Typical temperatures for the month run from 9 to 16 °C. The overall cut-off is 8 h 30 min.

The race was first held in 2021.

Against the calendar

Where this race sits among the others

Ranks are computed across every race of the same distance.

  • Average water temperature

    19 °C · median 21 °C

    The 30th coldest of the 128 middle-distance races with a figure, across every circuit.

  • High air temperature

    16 °C · median 25 °C

    The 2nd coolest of the 152 middle-distance races with a figure, across every circuit.

  • Bike elevation gain

    840 m · median 569 m

    The 29th 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.

58

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

160

races are held in Europe. 40 of them in the same month as this one.

Questions about this race

When is IRONMAN 70.3 Bolton 2027?
IRONMAN 70.3 Bolton is held on 6 June 2027 in Bolton, United Kingdom. The race is sold out.
Is a wetsuit allowed at IRONMAN 70.3 Bolton?
Most likely. The average water temperature is 19 °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 Bolton?
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 Bolton?
The bike course climbs about 840 m, the 29th hilliest of 105 half-distance races with a figure. The bike is labelled rolling and the run rolling. Expect highs of about 16 °C on race day.
How much is the entry fee for IRONMAN 70.3 Bolton?
Entries start at £360 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: 4 Jun 2027 to 7 Jun 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