World’s Most Extreme Triathlon Destroys Even Elite Athletes. He Prepared in 2 Weeks and Placed 69th (His Secret Was All Mental)

Two weeks to prepare for what many consider the world’s most brutal triathlon.

No prior triathlon experience.

And a finish line that sits at the top of a Norwegian mountain, accessible only to those who push their bodies past what seems humanly possible.

YouTuber Magnus Midtbø recently documented his attempt to complete the notorious Norseman triathlon with just 14 days of training—a challenge that left even seasoned coaches shaking their heads in disbelief.

The Insane Challenge: Norseman Explained

The Norseman isn’t your typical triathlon. Athletes begin by jumping off a ferry into the frigid waters of Norway’s Hardanger fjord, swimming 3.8 kilometers in darkness.

Then comes 180 kilometers of cycling through brutal mountain roads with over 3,000 vertical meters of climbing—comparable to a mountain stage in the Tour de France.

The final test? A full marathon where the last 17 kilometers go straight up a mountain.

You jump off from a ferry in a fjord in Norway, the Hardanger fjord in darkness into cold water and then you swim 3.8 km. Then you jump on the bike for 180 km. It’s not a flat bike. This is comparable to a mountain stage in Tour de France with more than 3,000 vertical meters of climbing.

Over 6,300 people applied for a slot in the race, and most successful finishers train for at least a year.

From One Year to Two Weeks

When Midtbø initially reached out to coach and seven-time Norseman finisher Eivind Broen, the conversation started with a one-year training plan.

That timeline quickly shrank to four months, then to before summer, until finally Midtbø made his final decision.

You reached out to me one final time and you were like, you know what, let’s just do two weeks.

Broen’s response was cautiously skeptical.

Two weeks of time preparing for Norseman, I would not say it’s completely impossible, but I think it’s very fair to state that it’s very difficult. And it’s borderline. Is it doable?

Medical Clearance With a Warning

Before beginning training, Midtbø consulted with a doctor to assess whether attempting Norseman with minimal preparation posed serious health risks.

The doctor’s assessment revealed something startling about just how extreme this race truly is.

Your blood values when you finish this race is the same as a person that has a heart attack or heart failure, even for the professionals. So if you end up in hospital, they believe you have a heart attack or a heart failure.

Despite this alarming comparison, the doctor gave Midtbø the green light, though with significant reservations.

For anyone else than you, I would say that would not be possible. I’m not sure you will manage it, but it’s not dangerous, I think.

Starting From Below Average

Midtbø’s swimming ability—or lack thereof—was perhaps the biggest concern. As a former professional climber, he had strength and endurance, but swimming technique was entirely foreign territory.

When his swimming coach reviewed early footage, worry set in immediately.

Midtbø wasn’t floating properly, had no technique, and was working against the water rather than with it. With his initial form, making the swim cutoff time of 2 hours and 15 minutes seemed impossible.

However, one piece of good news emerged from fitness testing: Midtbø’s VO2 max came in at 59.1—well above average and in the “very good” category.

Above 50, it’s very good. You’re not an average guy.

The Two-Week Training Gauntlet

The training schedule was relentless. Every single day involved multiple hours of swimming, cycling, or both.

One particularly brutal session included 140 kilometers of cycling followed immediately by running—designed to simulate the dreaded bike-to-run transition that destroys even experienced triathletes.

The beginning I was like, ah, this is easy. The first like 70k, super easy, fine. And then the last hill really hit me.

Midtbø also received specialized instruction from some of the best Norseman swimmers, who emphasized one critical point: conserve energy in the water.

For you, I think it’s about being comfortable around people and using as little energy as possible on the swim.

Race Day: The Freezing Start

Race morning arrived with a 5:00 a.m. alarm. Midtbø boarded the ferry with 250 other competitors, all preparing to leap into the dark, frigid waters of the fjord.

The atmosphere was electric with nervous energy.

I can’t remember the last time I was this nervous. I must have had like 190 heart rate when jumping off that ship.

Timing the jump proved tricky—too early meant treading water for 30 minutes before the start, too late meant the ferry would drift away from the starting line.

Midtbø aimed for the middle but still had to swim an extra 400 meters just to reach the start line before the race officially began.

Swimming Faster Than Expected

The swim start was chaotic—elbows flying, people kicking, complete mayhem for the first 100 meters.

But Midtbø followed his coach’s advice: don’t swim too fast. He focused on technique, controlled his breathing, and drafted behind faster swimmers to conserve energy.

His goal was to finish the swim in under 1 hour and 30 minutes.

He finished in 1 hour and 17 minutes.

While impressive, this created a new concern—had he pushed too hard and compromised his legs for the bike portion?

The Bike: Finding Flow State

The 180-kilometer bike course began with flat roads before transitioning into steep, unforgiving climbs.

Initially, Midtbø felt drained and people began passing him. But after eating and settling into a rhythm, something clicked.

My bike feels amazing. My legs also feel light and strong. I’m like in the flow and I’m passing a lot of people.

By the first timing point at 20 kilometers, Midtbø was in 105th place—well within range of the coveted black finisher shirt, awarded only to the first 161 athletes to reach a specific cutoff point on the run course.

Throughout the bike leg, his support team provided water, electrolytes, Red Bull, gels, and candy at designated zones. While Midtbø initially welcomed the refueling, he eventually began feeling sick from all the sugar.

But he understood a crucial principle: eating now prevents complete collapse later.

The Final Climb and Transition to Running

The bike course’s final obstacle was a 7-kilometer climb with 10-11% incline—the steepest section of the entire race.

This is where insufficient training would reveal itself, where saved energy would determine who continued climbing and who struggled.

Midtbø powered through, and after a nerve-wracking downhill section where a flat tire could have ended everything, he arrived at T2—the transition to running shoes.

The transition was brutal. His legs felt heavy and sore from hours on the bike.

I haven’t really trained the running at all. Like I’ve trained the transition to running, but the longest I ran for was like 5k and now I’m going to do 42k uphill.

The Marathon: Mental Warfare

Running a marathon after swimming nearly 4 kilometers and cycling 180 kilometers is where Norseman separates dreamers from finishers.

Midtbø’s strategy was pure mental compartmentalization—focus only on the next kilometer, never the finish line.

Remarkably, he continued passing competitors and worked his way up to 76th place.

His support team tried to keep him fueled and hydrated, but Midtbø’s body began rejecting food and sweet drinks entirely. They resorted to secretly mixing high-carb gels into his water.

He doesn’t want it, but he needs it.

Zombie Hill: The Breaking Point

After 25 kilometers of running came the part that gives Norseman its fearsome reputation: Zombie Hill.

This section climbs relentlessly for 17 kilometers straight up the mountain, and it’s where athletes are reduced to shuffling, exhausted shadows of themselves.

Everything hurt—Midtbø’s feet, knees, back. People around him moved at a crawl.

But when the cutoff point came into view—the station where he would receive his black finisher shirt—new energy emerged from somewhere deep inside.

He started passing people again. One, two, three athletes fell behind as he pushed toward the summit.

The Finish: 69th Place

Through the fog, Midtbø heard shouting and music. The finish line was close.

His final time: 13 hours, 7 minutes, and 7 seconds.

Final placement: 69th out of 250 starters.

My dream was 14 hours. It’s a weird feeling. I thought I would celebrate more but it’s more like—it’s almost emotional, you know, like the support and everything.

The achievement was extraordinary not just because Midtbø finished, but because he finished strong—in the top third of all competitors, having trained for only two weeks.

What Made This Possible?

Several factors contributed to Midtbø’s unexpected success:

• Exceptional base fitness: His VO2 max of 59.1 and background as a professional climber provided a foundation that can’t be built in two weeks
• Mental toughness: Years of extreme climbing trained his mind to push through discomfort
• Smart pacing: Despite the urge to go faster, he mostly followed his coach’s conservative strategy
• Expert coaching: Having experienced Norseman finishers guide training and race strategy proved invaluable
• Strategic fueling: Consistent nutrition throughout the race, even when his body resisted, prevented the catastrophic bonking that ends many attempts

The Bigger Lesson

Midtbø’s coach Eivind Broen finished the race in first place, a full 45 minutes ahead of second place—a reminder that proper preparation yields extraordinary results.

While Midtbø’s two-week challenge makes for compelling content, it’s not a recommended approach for most athletes.

The physical and mental demands of Norseman are extreme, and attempting it without adequate preparation carries real risks of injury, severe exhaustion, or worse.

What this challenge does demonstrate is that with exceptional base fitness, expert guidance, intelligent pacing, and extraordinary mental fortitude, the human body can accomplish seemingly impossible feats.

But perhaps the most important takeaway is what Midtbø said after crossing the finish line—that having a meaningful goal and working toward it daily, even for just two weeks, created a sense of purpose that made the suffering worthwhile.

That lesson applies whether you’re attempting the world’s hardest triathlon or simply trying to improve your health one day at a time.