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Triathlon Atlas

Calendar

The long-distance triathlon calendar, month by month

159 races grouped by the month of their next edition, read on 22 September 2026. Tick a distance or a region and each month shrinks to what is left.

159

races, all of them

Distance
Month
Region
Country
Swim venue
Bike
Run
Water temperature

14 °C is the coldest average published, 29 °C the warmest.

September 4

RaceDateCountryDistanceSwimWaterBikeRunEntries
IRONMAN 70.3 World Championship Nice12 Sept 2026FRHalf distanceOcean16 °C Hilly FlatOpen
IRONMAN 70.3 New York Jones Beach26 Sept 2026USHalf distanceBay18 °C Flat FlatOpen
IRONMAN 70.3 Augusta Augusta27 Sept 2026USHalf distanceRiver23 °C Rolling RollingOpen
IRONMAN Chattanooga Chattanooga27 Sept 2026USFull distanceRiver24 °C Rolling RollingOpen

October 22

RaceDateCountryDistanceSwimWaterBikeRunEntries
IRONMAN Gurye Korea Gurye4 Oct 2026KRFull distanceReservoir24 °C Flat HillyOpen
IRONMAN Calella-Barcelona Calella4 Oct 2026ESFull distanceOcean23 °C Flat FlatOpen
IRONMAN 70.3 Waco Waco4 Oct 2026USHalf distanceRiver26 °C Flat RollingOpen
IRONMAN 70.3 Buenos Aires Palermo Buenos Aires4 Oct 2026ARHalf distanceLake23 °C Rolling FlatOpen
5150 Coquimbo Coquimbo4 Oct 2026CLShort courseOcean15 °C Flat FlatOpen
IRONMAN World Championship Kona10 Oct 2026USFull distanceOcean26 °C Rolling RollingOpen
IRONMAN 70.3 Encarnacion Encarnacion11 Oct 2026PYHalf distanceRiver20 °C Hilly FlatOpen
IRONMAN 70.3 Versailles Versailles11 Oct 2026FRHalf distanceReservoir21 °C Rolling FlatOpen
IRONMAN 70.3 Sharm El-Sheikh, Egypt Sharm El-Sheikh16 Oct 2026EGHalf distanceBay28 °C Rolling FlatOpen
IRONMAN 70.3 North Carolina Wilmington17 Oct 2026USHalf distanceOcean19 °C Flat RollingOpen
IRONMAN 70.3 Portugal-Cascais Cascais17 Oct 2026PTHalf distanceBay18 °C Rolling RollingOpen
IRONMAN Portugal-Cascais Cascais17 Oct 2026PTFull distanceBay18 °C Rolling RollingOpen
IRONMAN 70.3 Poreč Porec18 Oct 2026HRHalf distanceOcean21 °C Rolling RollingOpen
IRONMAN California Sacramento18 Oct 2026USFull distanceRiver17 °C Flat FlatOpen
IRONMAN 70.3 Port Macquarie Port Macquarie18 Oct 2026AUHalf distanceRiver23 °C Rolling FlatOpen
IRONMAN Australia Port Macquarie18 Oct 2026AUFull distanceRiver23 °C Rolling FlatOpen
IRONMAN 70.3 Florianopolis Florianopolis18 Oct 2026BRHalf distanceOcean22 °C Flat FlatOpen
IRONMAN 70.3 Málaga Málaga18 Oct 2026ESHalf distanceOcean20 °C Flat FlatOpen
IRONMAN 70.3 Dhofar Salalah24 Oct 2026OMHalf distanceBay27 °C Rolling FlatOpen
IRONMAN 70.3 Costa Navarino, Peloponnese, Greece Peloponnese25 Oct 2026GRHalf distanceOcean23 °C Rolling FlatOpen
IRONMAN 70.3 Agadir Agadir25 Oct 2026MAHalf distanceOcean21 °C Rolling FlatOpen
5150 San Juan San Juan30 Oct 2026ARShort courseReservoir22 °C Flat FlatOpen

November 4

RaceDateCountryDistanceSwimWaterBikeRunEntries
IRONMAN 70.3 Kenting Kenting1 Nov 2026TWHalf distanceOcean25 °C Flat FlatOpen
IRONMAN 70.3 Goa Goa1 Nov 2026INHalf distanceOcean26 °C Hilly HillyOpen
IRONMAN 70.3 Türkiye Belek1 Nov 2026TRHalf distanceOcean25 °C Flat FlatOpen
IRONMAN San Juan San Juan1 Nov 2026ARFull distanceReservoir22 °C Rolling RollingOpen

Read from the organiser’s own pages on 22 Sept 2026

How the year is shaped

June
23 The busiest month, followed by October with 22 races.
January
2 The quietest month, with February next at 4.
May to October
106 Races held in the six months of the northern summer season, out of 159.
full distance, November to March
8 Full-distance races held in the northern winter, most of them south of the equator or in the tropics.

Reading the calendar

Each race appears once, in the month of its next published edition. A race held every year in June therefore sits in June whether its next date is in 2026 or 2027, and the date column tells you which.

The season has two peaks. June and October carry the most races, and between them the summer months stay busy in Europe and North America. From November to March the calendar moves south, to Oceania, South America, South-East Asia and the Middle East, where the air and the water are warmer at that time of year.

When you choose a month, count back the weeks of training you need and check what the weather allows where you live during that block. The calendar holds the race dates, and the planning around them is yours.

Found a month that works?

Open the finder, tick that month, and add the other criteria that matter to you.

Open the race finderCompare a shortlist