On Sunday, June 28, triathlete Magnus Ditlev will race for the first time this year, when IRONMAN Frankfurt – which also serves as the IRONMAN European Championship – gets underway at 6:20 AM.

The legendary IRONMAN distance consists of a 3.8 km open-water swim, 180 km on the bike, and a closing 42.2 km marathon – and this year, a heatwave with temperatures of up to 41 degrees Celsius could make it one of the toughest days in many years.

For the Danish triathlete, Sunday's race marks a long-awaited comeback to the start line after a spring that fell apart. A minor knee injury kept Magnus Ditlev out of IRONMAN 70.3 Oceanside in March, while first the year's opening IRONMAN in Texas in April and later IRONMAN Lanzarote in May were ruined by shingles.

First race of the season – and first IRONMAN in a long time

Frankfurt will thus be his first competition since the IRONMAN 70.3 World Championship in Marbella in November – and his first full IRONMAN since he was forced to withdraw with illness at the World Championship in Nice in September. Magnus did complete the European Championship in Frankfurt last year in 8th place, but that race was ruined by a disqualification for littering (discarding waste outside the designated zone), which was later rescinded. For the last full IRONMAN in which the Dane fought for the win from start to finish, you have to go all the way back to his triumph at IRONMAN South Africa in March last year.

A spring plagued by injury and illness

"It's been a frustrating start to the season. I got problems with my knee in Gran Canaria in March, and when I got back into training, I came down with shingles in April right before IRONMAN Texas. In May, there was even a relapse with fever in the lead-up to Lanzarote, and my body just hadn't recovered. So I've had to withdraw from Oceanside, Texas, and Lanzarote. Getting started this late was definitely not the plan, but unfortunately that's how it turned out," says Magnus Ditlev.

Five weeks at altitude alongside cycling's biggest stars

Instead, the Dane has spent the past five weeks at an altitude training camp in the Sierra Nevada mountains in Spain, where the world's best cyclists have also been preparing for the summer's biggest races.

"It was completely packed with riders, mechanics, and staff up there, and I met pretty much all the stars when I was out training. On a single ride, I came across both Wout van Aert, Remco Evenepoel, and Tadej Pogacar, and at one point Remco's team asked me to take a short break because Remco was in the middle of a photoshoot on a descent. It's been fun and motivating to train in the same place as the pro cyclists," says Magnus Ditlev, who is himself known for his abilities on a time trial bike – even if he wasn't worth much during his first days at altitude.

"It always takes a little time to adapt to the altitude, but things have just gotten better and better up here. I wasn't in my best shape when I arrived, but my body has responded really well to the training, and I've grown stronger every single day," says Magnus Ditlev.

Hungry to prove his worth

Although the time off hasn't provided any extra physical freshness, motivation is sky-high for the Danish IRONMAN star, who has missed measuring himself against the best in the world.

"I've missed racing, because that's what I train for, and I'm looking forward to seeing where I stand. It's been hard to sit and watch everyone else race, so I'm hungry to prove that I'm still among the best. People quickly forget what you've done in the past," he says.

The Dane is now also the former world record holder over the IRONMAN distance. While Magnus was sidelined by injury and illness, Kristian Blummenfelt set a new world record at the very IRONMAN Texas race that Magnus missed, clocking 7:21:24 and shaving exactly two minutes off Magnus' old record of 7:23:24 from Challenge Roth in 2024.

Magnus Ditlev doesn't believe, however, that the overall level has moved since he last won an IRONMAN in March 2025.

"There's been some fast racing, but I don't think there's been a big jump in level. I still believe it takes the same things to win. It's probably mostly the run that has moved a little, with a closing marathon around 2:30 becoming more normal. But I'll do my part to make sure the bike isn't easy, and then we'll see what that does to my competitors' running legs," he says.

The hammering heat will be the day's big wild card

The great unknown on Sunday, however, will be the heat. Frankfurt is in the grip of a heatwave with nighttime temperatures just below 30 degrees, and temperatures are expected to reach as high as 41 degrees Celsius, which will make the race one of the toughest weather-wise the Dane has ever experienced.

"Racing in 41 degrees will be absolutely wild. The hottest I've ever raced in is around 35 degrees, and every single degree matters a lot when you're out there for so long. This will be significantly worse than Hawaii, for example, and I don't think it will be a day for the truly great athletic performances – more a question of who can cool themselves down the best and endure the discomfort," says Magnus Ditlev.

The heat will be a factor from early in the day

"It's already 29 degrees at six in the morning, so the bike could get extremely hot. In Hawaii, it only gets really bad during the last hour of the 180 km, so this could become insanely demanding and ugly for the athletes. I did some time trial training in close to 40 degrees down around Granada during my altitude camp, so I feel reasonably heat-adapted, and I usually ride well despite the heat. I've brought my Mexican fisherman's hat from Hawaii 2024, and it will definitely see action again – and then it's all about getting my hands on as much cold water and ice at the aid stations as possible to keep my core temperature down," he says.

The bike must be a weapon once again

As always, the bike will be the centerpiece of the Dane's tactics, and a rule change increasing the draft distance between athletes from 12 to 20 meters plays into his hands:

"The bike course suits me well if I can get away from the others. This year we're racing with a 20-meter rule, so the field will hopefully be spread out more. The bike course isn't particularly technical, but it's quite fast."

The swim in the big lake is held without wetsuits and will be decisive for how good his starting point becomes. The Dane has worked closely with the former national team swim coach, Stefan Hansen, for a year and a half, and that partnership has made him significantly faster in the water. Still, those who have swum their whole lives will always have an advantage in triathlon.

"Vincent Luis and Jamie Riddle are probably the two fastest swimmers in the entire sport, so I'll have to see if I can stay with the front group. I'm hoping to be within 90 seconds of the front when we get out of the water. Many will probably take the swim a bit easy, because you can easily overheat in the water if you swim too hard – and then it becomes a long day," he says.

Racing for the win

Even though the comeback comes after a long break, the ambition is clear.

"The goal is to win. I race for the victory, exactly as I always do, and I don't think about it being the season's first race once I'm underway. It's a strong field, so it will be a really good test of where I stand," says Magnus Ditlev.

Last year's disappointment, when the Dane was running for the win before an official wrongfully disqualified him for discarding waste outside the zone, is behind him.

"Last year turned into a rough day at the office with that littering episode, so I've considered asking the organizers whether they can extend the zone now that it's so hot and cooling will be so important for all the athletes. But it's not something I dwell on. Now it's simply about racing my own race from start to finish," he says.

A slot for Worlds awaits – but a strong IRONMAN Pro Series result will be difficult

A full six Worlds slots are up for grabs in Frankfurt, and qualification for the IRONMAN World Championship in Hawaii later this year is an important intermediate goal for Magnus Ditlev.

"Qualifying for Worlds in Hawaii is an important goal, but if I put together a good race, that qualification will come by itself," says Magnus Ditlev. Many of the other favorites are already qualified, so the slots will roll down to the next athletes who have not yet qualified.

Frankfurt also counts toward the IRONMAN Pro Series, where an overall season winner is crowned based on each athlete's best results from three full IRONMAN races and their two best results over the half distance. With most of the spring's events skipped, however, it will be difficult for Magnus Ditlev to contend in the overall standings this year, regardless of how Sunday goes. The focus is therefore on the race itself and on the Worlds ticket to Hawaii.

The course

Swim: 3.8 km in Langener Waldsee. The swim is without wetsuit and features a so-called Australian exit, where the athletes get out of the water and run a short stretch between the two laps.

Bike: 180 km on a relatively flat and fast course that isn't particularly technical. This year, the race is held with a 20-meter draft rule, which will hopefully spread the field out more and give the strong cyclists a better chance to make a difference.

Run: 42.2 km over four laps along the river. The course is quite flat, but with almost no shade, the closing marathon will be a scorching affair in the extreme heat.

The biggest rivals:

Casper Stornes, Norway: Defending IRONMAN World Champion after his victory at the Worlds in Nice last year, where he helped secure a Norwegian sweep of the podium. Comes from short-course triathlon and is lightning fast on the run – he became the first winner of an IRONMAN to run under 2:30 for the closing marathon with his time of 2:29:25.

Gustav Iden, Norway: IRONMAN World Champion in 2022 and silver medalist at the Worlds in Nice last year. One of the sport's biggest names, who has found his top level again after a couple of lean years following his 2022 world title.

Vincent Luis, France: Former two-time World Champion over the Olympic distance (2019 and 2020) and one of the absolute fastest swimmers in the entire sport. He was also at altitude camp in the same mountains as Magnus during the first weeks.

Start and livestream

IRONMAN Frankfurt (the IRONMAN European Championship) begins on Sunday, June 28 at 6:20 AM.

The race can be watched live on IRONMAN's YouTube channel: https://www.youtube.com/@ironmantriathlon

Start list: https://www.ironman.com/proseries/races/im-frankfurt/starters-men