The Norwegian 4×4 for runners.
Running is the most natural way to run the Norwegian 4×4: four hard four-minute efforts above 85% of max heart rate, three minutes easy between. Here's where to do it, how to pace it, and the mistakes to avoid.
Where to run it
- Hills. The simplest option — a steady 5–8% gradient drives heart rate up at a controlled, joint-friendly pace. Jog back down for recovery.
- Treadmill. Maximum control: set a hard speed plus a 1–2% incline and adjust the incline to fine-tune heart rate.
- Track or flat road. Works well once you know your effort; just be honest about holding the intensity for the full four minutes.
Pacing: chase heart rate, not splits
The dose is defined by heart rate, so let it lead. Build into each rep — don't sprint the first 200 m — and aim to be above 85% of max by around the one-minute mark, then hold or climb for the remaining three minutes. On a hilly route your pace will swing while your heart rate stays steady; trust the heart rate.
This is the catch with a stopwatch: the first minute or two of ramp-up isn't at VO₂max yet, so a plain timer counts work you didn't do. A threshold-gated timeronly counts the four minutes once you're above 85%.
Common mistakes
- Going out too hard.Sprint the first interval and you'll fade by the third — even split the effort across all four.
- Recoveries too hard. The three minutes are meant to be easy. Jog or walk; let the heart rate drop.
- Skipping the warm-up.Cold, you'll spend the whole first rep just trying to reach 85%.
Frequently asked questions
- How do I run the Norwegian 4×4?
After a 10-minute warm-up, run hard for four minutes until your heart rate is above 85% of max, jog or walk easy for three minutes, and repeat four times. The effort is by heart rate, not a fixed pace — aim to be above 85% by the one-minute mark of each rep and hold it.
- What pace should I run the 4×4 at?
There's no single pace — it's set by heart rate. Roughly, it's close to your hard 3K–5K effort for most runners, but the right pace is whatever keeps you above 85% of max for the full four minutes without fading. On hills or a headwind the pace will be slower for the same heart rate, and that's fine.
- Can I do the Norwegian 4×4 on a treadmill?
Yes — a treadmill is ideal because you control the effort precisely. Set a challenging speed and add a 1–2% incline; bump the incline rather than sprinting if you need more heart rate. Watch your live heart rate to know when you've crossed 85%.
- How many times a week should runners do the 4×4?
Once or twice a week is plenty for most runners, on top of easy aerobic mileage. It's a hard session — keep easy days genuinely easy so you can hit the intensity when it counts.
Train at VO₂max.
Run the 4×4 by heart rate, not guesswork — Stellar Intervals counts each four minutes only while you're above 85% of max.