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THOMAS SCHEER ACHIEVED A TRIATHLON GUINNESS WORLD RECORD ON AN X-PR

Bruce Lin /
Thomas Scheer Achieved a Triathlon Guinness World Record on an X-PR

On May 30, 2026, Thomas Scheer officially became the Guinness World Record holder for the most long-distance (113 km) triathlon races completed in a single year. Between May 31, 2025, and May 30, 2026, he finished a whopping 26 70.3-distance races. To achieve this, he battled through mechanicals and injury. It required more than 92,000 miles of travel and eating an alarming number of Dairy Queen Blizzards. And he did it all on his Quintana Roo X-PR.

But for Scheer, a Guinness World Record certificate was not the only goal. It was also about giving back to the Boys & Girls Club community that shaped him as a kid, and proving that, at 350 pounds, he could do something nobody thought possible. 

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It All Started With a 10K

Scheer's path to triathlon started at age 12, watching the IRONMAN World Championship in Kona on TV at his local Boys & Girls Club. He didn't know what he was watching, but he knew he wanted to do it one day.

As it does with many of us, though, life got in the way. Scheer has been a lifelong entrepreneur, and one of his early ventures was a pizza restaurant that came with an occupational hazard: unlimited pizza and soda. As an adult, he ballooned to somewhere north of 350 pounds. He knew he needed a change, and the turning point came in 2005, when his then-girlfriend talked him into running the Peachtree Road Race, a 10K in Atlanta. It was, in his words, the hardest race he'd ever done.

Tom Scheer achieving the most triathlons in a year record

But that was the spark. He started swimming every day. He rode his mountain bike to the pool and back. He jogged around a golf course with his dog. Then, a little over a year later, he competed in his first triathlon: the Red Hills Triathlon in Tallahassee, Florida. 

What It Takes to Set a World Record

20 years later, Scheer was still racing triathlons, and one day, he set his sights on a new goal: the most half-IRONMANs completed in 365 days. The previous record was 24, held by Michael Mendoza. Scheer figured he could beat it. He began his new quest the week after getting married in June 2025.

Quintana Roo triathlon bikes

Scheer has a solid collection of QR bikes with two X-PR triathlon bikes and an SRFive road bike. He can get free pre-race inspections and bike services from QR's pro mechanics at key races

Chasing 24+ sanctioned half-IRONMANs in a single year is as much a logistics exercise as an athletic one. Scheer keeps an obsessively detailed spreadsheet tracking everything down to individual crackers and sticks of gum. He always packs two tri suits (a zipper broke on him pre-race once, and a spare saved him). He carries spare parts for everything from common mechanical failures like flat tires to those most triathletes never think about, like a snapped crank or a stripped-out derailleur hanger.

He had to race through injury, too. He sustained a torn rotator cuff and supraspinatus tendon at IRONMAN 70.3 Louisville, and couldn’t get it surgically repaired until after finishing several more races that year.

One of the most emotional moments on his record run was at IRONMAN Cozumel. He'd had multiple years of bad luck at Cozumel: a DNF from illness one year, a mechanical another year, and worst of all, missing the finish cutoff by four seconds. This time, though, he came back and finally finished clean, closing a loop that had bothered him for years.

Not every race counted, too, even when he finished it. Official Guinness rules required him to complete the exact 70.3-mile distance at a sanctioned event. This meant when he did a full IRONMAN, it still only counted as one race! A half-Ironman with its swim leg cancelled due to weather didn't count at all! 

Getting through it all clearly took grit, and what's even crazier than achieving the record is that Scheer kept going. He he even broke his own record and pushed the record out to 29 finishes! He’s just waiting for that new record to be certified. 

The Real "Why" & What's Next

Thomas Scheer guinness world record holder

Ask Scheer why he kept going through 34 total races (26 of which counted), two surgeries, and a small mountain of Hilton points burned on hotel stays, and the answer always traces back to the same kid watching the IRONMAN World Championship in Kona on TV at his local Boys & Girls Club. Scheer said he wanted to break the record specifically to exemplify the resilience of Boys & Girls Clubs members and alumni, and to raise awareness of the good the Clubs do every day for people like him.

That mission extends past the finish line. Scheer plans to launch a backpack donation drive, collecting the gently used race backpacks that pile up in most triathletes' closets after a few seasons, filling them with sports equipment and school supplies, and getting them into the hands of local Boys & Girls Club kids.

With the record now officially in hand, Scheer isn’t stopping. He’s still doing triathlons, and he even says he wants to dabble in ultra-distance running, and he has his sights set on races like the Javelina Jundred, Western States 100, and eventually Badwater 135. Ultimately, he sees his record chasing and goal setting as a long-term health project. After years of carrying significant weight, he wants to lean out, build endurance differently, and keep proving to himself, and to a few thousand kids who might be watching, that there's no such thing as a goal that’s too big.

Want to hear more of Scheer's story? Check out his most recent interview on the Tri Beginner's Luck Podcast. 

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