The Norwegian Method Explained: How the World's Fastest Triathletes Train

Introduction

Over the past few years, one question has come up more than almost any other in endurance sport:

What is the Norwegian method, and does it really work? It's a fair question. 

The system has produced Olympic gold medals, Ironman world records, and some of the most dominant performances the sport has ever seen. When athletes like Kristian Blummenfelt and Gustav Iden consistently outperform the world's best, people naturally want to know what's happening behind the scenes.

As a coach, though, I think there's a danger in simply trying to copy what elite athletes do. The Norwegian training method isn't magic, and it certainly isn't easy. What makes it so effective isn't a single secret workout; it's years of disciplined, carefully controlled training in which almost every session has a purpose.

The good news? You don't need to train like a pro to benefit from its principles.

What Is the Norwegian Method?

At its simplest, the Norwegian method is a way of programming training to maximize aerobic development while avoiding unnecessary fatigue.

Rather than constantly training hard, athletes perform huge amounts of easy aerobic work and reserve their hardest sessions for carefully controlled threshold workouts.

Unlike in traditional interval sessions, where athletes simply "go hard," intensity is tightly regulated to keep efforts just below the point at which fatigue rapidly accumulates.

In other words, it's about training smarter, not simply harder.

Where Did the Norwegian Method Come From?

Although the system became famous through triathlon, its origins actually lie in distance running.

Former Norwegian runner Marius Bakken spent years experimenting with lactate-guided threshold training before sharing his ideas with other Norwegian endurance athletes. Those concepts influenced Norway's middle-distance success, including the Ingebrigtsen brothers.

In triathlon, coach Olav Aleksander Bu adapted those principles for Kristian Blummenfelt and Gustav Iden, combining high-volume endurance work with carefully measured threshold sessions.

The results have been remarkable:

• Olympic Gold

• Ironman World Championships

• Ironman World Records

• PTO victories

• Consistent performances across every race distance

The success of those athletes is what brought the Norwegian method triathlon into the spotlight.

Whether you're adopting elements of the Norwegian Method or simply preparing for your next race, having gear you can trust makes every session more enjoyable. Browse the SLS3 Tri Suit Range to find a suit built for training consistency and race-day confidence.

The Three Pillars of the Norwegian Method

Everything revolves around three simple principles.

Notice what's missing. There's no obsession with smashing every session. In fact, one of the biggest lessons the Norwegian method teaches is restraint.

What Does a Norwegian Method Training Week Look Like?

Professional triathletes following the Norwegian training method often train between 25 and 35 hours each week.

A simplified version might look something like this.

Those famous Tuesday and Thursday double-threshold days have become almost legendary. However, it's important to remember they're only possible because the athletes control every other aspect of training, nutrition, and recovery.

When you're spending hours training across all three disciplines, comfort becomes a performance advantage. Our SLS3 Phantom, Kaminari, and Mirage tri suits are designed to keep you comfortable through long training days as well as race day.

Why Double Threshold Training Works

One of the defining features of the Norwegian method is double threshold training. Instead of performing one extremely hard workout, athletes complete two moderate threshold sessions on the same day.

The key is that neither session becomes an all-out effort. By staying just below maximum intensity, they accumulate a large amount of quality work while remaining fresh enough to train again later that day.

For most recreational athletes, this is the hardest concept to understand. Progress doesn't always come from training harder. Often, it comes from training more consistently.

If you're interested in understanding training intensity in more detail, our guide to Heart Rate Training for Triathletes explains how to use heart rate zones to control your efforts effectively.

Does the Norwegian Method Actually Work?

The results certainly suggest it does. The Blummenfelt training system has helped produce Olympic titles, world championships and Ironman records.

ut it's also important to be balanced. The method has primarily been tested within a very small group of exceptional athletes, supported by full-time coaches, sports scientists, physiologists and recovery specialists.

That doesn't automatically mean every age-group athlete should copy it.

Some potential challenges include:

• Extremely high weekly training volume

• Significant recovery demands

• Mental fatigue from repetitive sessions

• Difficulty balancing with work and family commitments

The principles are outstanding; however, the workload isn't realistic for most people.

Norwegian Method vs Traditional Training

Many athletes wonder how the Norwegian method compares with more traditional endurance training.

Neither system is necessarily better. Both can be highly effective when matched to the right athlete.

What Age-Group Triathletes Should Steal (And What to Skip)

This is where I think many articles miss the mark. You don't need to become Kristian Blummenfelt. You simply need to train like someone who understands why the system works.

After coaching endurance athletes for more than two decades, I've found that consistency beats hero workouts almost every time.

One thing you shouldn't overlook is comfort. Consistent training is much easier when you're wearing a tri suit designed for long hours in the saddle and seamless swim-bike-run sessions. Explore the SLS3 Tri Suit Collection.

If you're training five to ten hours a week, you'll probably gain more by controlling your effort than by adding extra intensity.

Our guides to Sweet Spot Training, Training in the Heat and How to Taper for a Triathlon expand on many of these same principles and show how to apply them in real-world training.

Recovery Matters Just As Much

One aspect of the Norwegian method that's often overlooked is recovery. The impressive training volume only works because recovery is treated as seriously as training itself.

That means:

• Prioritizing quality sleep

• Eating enough to support heavy workloads

• Staying hydrated

• Monitoring fatigue

• Backing off when needed

Many athletes also include recovery tools such as compression therapy, mobility work and cold-water immersion to help them stay consistent throughout demanding training blocks.

Final Thoughts

The Norwegian method isn't a miracle training system, and it certainly isn't about copying every session Kristian Blummenfelt completes. At its heart, it's a philosophy built on consistency, patience, and exceptional discipline. 

The world's best athletes succeed not because they train harder every day, but because they understand exactly when to push and, just as importantly, when not to.

For most age-group triathletes, that's the biggest lesson to take away. Train consistently, keep your easy days genuinely easy, make your quality sessions count, and prioritize recovery just as much as your workouts. 

You may never train 30 hours a week, but by adopting the principles of the Norwegian method, you'll almost certainly become a smarter, more durable athlete.