Supertri’s switch to focus more on mass-participation events rather than separate professional races seems to be paying off, as it followed other major race brands in announcing an impressive spike in the number of amateur triathletes signing up for swim, bike, run in 2026.

Having played a key role in developing some of the biggest names in short-course racing, it will now focus on a more ‘unifying’ approach, with both professionals and age-groupers competing together under one Supertri brand at festivals across North America and Europe.

The hope is to attract 30,000 athletes, including a sizeable number of first-timers, to sign up for each of their eight events over the course of a season that will see them host races in Chicago, Austin, Blenheim, Kerrville, Long Beach, New Jersey, Toronto and Toulouse – with the pros racing alongside them in Austin, Blenheim and Toronto.

Races sold out around the world

Boosted by a rise in participation around the globe, it seems triathlon event organisers are facing a race of their own to ensure there are enough places available to meet the fast-growing demand.

News of Supertri’s spike in demand follows similar reports from IRONMAN, T100 and Challenge Family, with the number of ‘sold out’ signs on the 2026 triathlon calendar proof, if any were needed, of just how difficult it can be to secure a place if you are not a pro.

“We are seeing significant growth across our global portfolio of events in 2026,” a Supertri spokesman said. “This momentum follows the launch of our unified amateur and professional racing model, alongside a focus on delivering a participant experience built on shared connection, purpose, and achievement.

“Our 2026 aim is to grow our events to 30,000 athletes, including an ambitious goal of 10,000 first-timers, and we are tracking very well against those targets. In our established markets, entry numbers are up 33% year-on-year for Supertri Chicago, 25% for Supertri Toronto, and 21% for Supertri Long Beach.

“Achieving this level of growth in mature markets proves that our offering is striking a chord. By delivering premium short-course racing in major cities, fostering community, and actively supporting first-timers, we are successfully engaging both seasoned triathletes and those who are entirely new to the sport.”

Europe and the US witnessing huge growth

The Triathlon Industry Alliance (TIA) in Great Britain recently confirmed there were now more than 120,000 active racing triathletes in the UK, with a noticeable uplift in new and younger participants. It is a similar story in the US, where USA Triathlon announced 303,000 active members, a strong growth in the shorter distances, and increased participation among women and youth competitors.

France, meanwhile, has overtaken Germany as the second-largest global triathlon market after the US, showing a 25% increase in registrations. Germany still boasts nearly 58,500 German Triathlon Union members, while Belgium (51%) and the Netherlands (36%) also saw year-on-year participation growth.

IRONMAN says the demand for triathlon has reached ‘peak levels’ in both Europe and the United States, evidence of which was provided earlier this year when the new 70.3 Versailles sold out to more than 2,500 athletes in under three hours.

Versailles was added to the 2026 schedule along with the 70.3 races at Alghero, Leipzig, Vitoria-Gasteiz, and Málaga – all of which have since sold out, with Málaga spots snapped up in just four days.

Appetite for triathlon has grown ‘tremendously’

Indeed, of the 37 IRONMAN 70.3 races planned for 2026 across Europe, 31 of them are now full, while registration is currently only open for Poznan, Gdynia, Belgrade, Tallinn, Costa Navarino and Baku. It is a similar story for full-distance IRONMAN, with 13 of the 17 European races sold out, and registrations currently open only for Thun, Tallinn, Leeds and Lanzarote.

IRONMAN Europe, Middle East and Africa Managing Director, Thomas Veje Olsen, said: “In recent years, the appetite for triathlon racing in France has grown tremendously, with France already home to some of the most beautiful and challenging race destinations globally. Demand for IRONMAN 70.3 races in Europe is at an all-time high, with many events for this season already sold out, including all spring races.”

In North America, both Oceanside and Dallas Little-Elm 70.3s were sold out, while Oregon, Mont-Tremblant and Muskoka have also followed suit, with the full-distance events in Ottawa and Texas also no longer taking registrations.

An IRONMAN statement confirms how “demand for IRONMAN racing across North America is at an all-time high. This surge reflects athletes’ appetite for new destinations, iconic courses, and the unforgettable race-day experience that defines the brand. And the momentum isn’t slowing down as we see unprecedented demand for events.”

The new-look T100 is also witnessing impressive demand, with its London event this summer more than 90% full and well on course to see 6,000 entrants across its 100km, Olympic, Sprint and Super Sprint distances while the upcoming Singapore races are over the 7,000 mark.

As we head towards a 2027 that will, following the PTO acquisition of Challenge Family, once again see a major shift in the triathlon landscape, it will be up to the race organisers to ensure this is an upward trend that they not only recognise but also make the most of as they look to continue building on the growth of triathlon.