The 2025 triathlon season is underway, and Argon 18 athletes are gearing up for action across the globe. From Olympic to full-distance events in all world stage race series, our amazing roster of pro triathletes is preparing to take on new challenges, chase podium finishes, and make an impact on the racecourse.

For some, the season brings a shift in focus:  Moving from olympic to long distance, from 70.3 to the full distance, or making a comeback after time away from competition. 

Ironman South Africa – March 30

As a part of the Ironman Pro Series, Katrine Græsbøll (DEN), Ruth Astle (UK), and Anne Reischmann (GER) are taking on Ironman South Africa.

South Africa’s iconic full-distance Ironman will see a trio of Argon 18 athletes lining up for their first race of the season. Anne Reischmann closed out 2024 with a victory at Ironman Cozumel, while Ruth Astle previously broke the banner at Ironman South Africa back in 2021. Katrine Græsbøll had a strong performance at this race last year, finishing in 6th place. With tough conditions and strong competition, this race will be a true test of endurance and preparation.

Anne Reischmann - Photocredit: Joel Reischmann

T100 Singapore – April 5-6

The T100 Series kicks off 2025 in Singapore, where a mix of short-course and long-distance specialists will battle it out in the heat and humidity. Olympians Jess Learmonth (UK) and Tyler Mislawchuk (CAN) are set for what promises to be an exciting showdown.

Jess had an impressive 2024 season, hitting the podium in both races she competed in, and will strive to continue onto the new season. Tyler made his middle-distance debut at Ironman 70.3 Pucon in early January, where he also ran his first-ever half marathon—and won. A three-time Olympic athlete, he capped off 2024 with a top-10 finish at the Paris Olympics.

Ironman 70.3 Oceanside – April 5

Oceanside 70.3 is always a pro favorite, attracting top-tier talent and setting the stage for the months ahead. Tamara Jewett (CAN) and Joe Skipper (UK) will be at the start line, ready to test themselves against a competitive field. 

After winning in 2023, Tamara is hungry to reclaim her spot at the top of the podium. 

Joe Skipper, coming in strong after securing second place at Ironman New Zealand in early March, is also set to make an impact at Oceanside. With early-season momentum on his side, he will be looking to build on that success and continue his strong performances.

Jess Learmonth - Photocredit: Jordan Green

Challenge Sir Bani Yas – April 5

Emil Holm (DEN) is set to race at Challenge Sir Bani Yas, bringing his strength to this unique and scenic race venue. Emil has only a few middle-distance races on his CV, but all of them have resulted in top-5 finishes, including a victory. For several years, his primary goal was qualifying for the Paris 2024 Olympics—a goal he successfully achieved. Now, the 2025 season promises to be an exciting one for Emil, starting with this middle-distance race in April.

Ironman Texas – April 26

Tamara Jewett and Miranda Tomenson (CAN) will be lining up at Ironman Texas, with Tamara taking on her first full-distance race. With her recent aero optimization work at the velodrome, Tamara will aim to translate those improvements into a stronger bike leg, setting her up for an even more dominant overall performance. Her ability to maximize efficiency on the bike could be a key factor in delivering a standout race.

Challenge Gran Canaria – April 26

Angela Neath (USA) continues to focus on both gravel and triathlon, taking on the half-distance race at Challenge Gran Canaria before shifting gears to compete at The Traka in Girona on gravel. Her versatility across disciplines makes her an exciting athlete to watch this season.

Ironman 70.3 Valencia – April 27

Lizzie Rayner (UK) and Harry Palmer (UK) have been announced as two British athletes to watch as they take on Ironman 70.3 Valencia. It will be exciting to see how Lizzie’s season unfolds following her first pro win at Ironman 70.3 Portugal in October last year. Harry Palmer also claimed his first pro victories last season at Ironman 70.3 Swansea and Challenge Wales. Both athletes are ranked just outside the top 40 on the PTO ranking list, making them exciting names to follow in 2025. With a competitive field and a challenging course, they will be looking to make their mark early in the season.

Short distance races
Chase McQueen (USA), the American short course star, will kick-off the season in WTCS and Supertri racing and hit the long distance at Ironman 70.3 Warsaw on June 8th. 

Harry Palmer

Beyond our professional athletes, Argon 18 is proud to support thriving age-group communities across the globe. Groups like Bart Coaching (CAN), Mauna Endurance (USA), Team Argon 18 France (FRA), Coeur Sports (USA) and IRACELIKEAGIRL (USA) bring together athletes of all levels, racing in a variety of events and pushing their limits in both local and international competitions. Whether chasing a personal best, qualifying for a world championship, or simply enjoying the camaraderie of racing, these communities embody the passion and dedication that drive the sport forward.

From fast and furious short-course racing to grueling full-distance Ironman events, our athletes are set to take on a diverse range of challenges in 2025. Stay connected with Argon 18 on social media for race updates and behind-the-scenes stories as we follow our athletes' journeys throughout the season. 

Follow @argon18bike for official updates and @argon18_cc to connect with the Argon 18 Cycling Club.