A new host city for 70.3 worlds, the end of a popular U.S. Ironman, Jan Frodeno’s foray into ultrarunning, and more – catch up on what you may have missed in multisport this month.

Review the triathlon news you might have missed in September 2025. (Photo: Triathlete)
Published September 30, 2025 01:30PM
Triathlon News You May Have Missed in September 2025
September was a busy month for triathlon news, from an all-Norwegian podium at the men’s Ironman World Championship to the passing of an early icon in the sport. We tested and reviewed the best triathlon bikes of 2025, did a deep dive into the evolution of the aero position, and asked: should triathletes be worried about sharks?
But wait, there’s more! From an unexpected new host for 70.3 worlds to an unsurprising win in a new sport for triathlon’s GOAT, here are the news stories you may have missed this month.
Triathlon news: September 2025
Ironman Inks 70.3 World Championship Deal with Oman

Ironman and Experience Oman have announced a global partnership through 2030, making Oman the “official global destination” of the Ironman and 70.3 series. The partnership includes naming rights for the Ironman Pro Series starting in 2026, the first-ever full-distance Ironman in the Middle East, and hosting the 2029 Ironman 70.3 World Championship in Muscat.
Ironman CEO Scott DeRue said the partnership will “offer world-class race experiences in the region and showcase the incredible beauty, culture, and history of Oman, [which] fits perfectly with our global endurance community.”
USA Triathlon Announces 2026 Endurance Exchange Lineup

USA Triathlon will host three days of educational experiences and networking at the 2026 Endurance Exchange conference in Orlando, Florida, the organization announced this month. The conference, which brings together athletes, coaches, race directors, and industry representatives from around the United States, will offer learning tracks in coaching, training, and performance science. The conference will run from January 9-11, and registration is open now.
Duvoisin, Forissier Win 2025 XTERRA World Championship

In chilly temperatures against the backdrop of the Italian Dolomites, the 29th XTERRA World Championship on September 27 saw thrilling competition among 1,000 athletes from 54 nations. Loanne Duvoisin (CHE) won her first XTERRA World Championship in the women’s elite race with a time of 3:15:18, while Felix Forissier (FRA) won the men’s elite title in 2:44:18. Read Laura Siddalls’ recap of the race here.
Ironman Arizona to End After 2025
Former Malibu Triathlon Re-Enters Race Scene as Zuma Beach Triathlon

After a few years of back-and-forth over permitting and ownership of the famed California race, T he Malibu Triathlon finally returned to the race calendar, this time with a new name: the Zuma Beach Triathlon. The event on September 14 drew thousands of participants, spectators, and volunteers while raising over $150,000 for the Challenged Athletes Foundation (CAF) and the Boys & Girls Club of Malibu.
Jan Frodeno Now an Ultrarunner
Triathlon GOAT Jan Frodeno, 44, officially made his post-retirement transition to ultrarunning by winning the 40-44 age group and finishing 15th overall at Nice Côte d’Azur by UTMB, a 55km trail race with over 2,000 meters of climbing. His time was five hours and 27 minutes, less than an hour behind the 23-year-old winner, Miguel Benitez. This performance bodes well for his stated goal of qualifying for UTMB, the “Super Bowl” of ultrarunning held each year in the Swiss Alps.
Most-read Triathlete stories of September 2025
- Casper Stornes Wins, Leads All-Norwegian Podium at 2025 Ironman World Championship
- The Best Triathlon Bikes of 2025
- Live 2025 Men’s Ironman World Championship Pre-Race Coverage
- The Most Popular Bikes and Components at the 2025 Men’s Ironman World Championship
- An Expert Tester on the Fastest Shoes at the 2025 Ironman World Championship Nice
- The DNF Files: 2025 Ironman World Championship Nice
- The Fastest Pro Bikes at the Men’s 2025 Ironman World Championship in Nice
- Cam Wurf’s Insane Training Ride for the 2025 Ironman World Championship
- Evolution of the Aero Position
- Valerie Silk, Ironman Owner Who Put Race on Map, Dies at 74