How to improve your VO2max: The best trainig methods for better endurance
If you want to run faster, ride stronger, or simply last longer without fading, improving your VO₂max matters.
VO₂max is often described as your “aerobic ceiling”, or the maximum amount of oxygen your body can use during intense exercise. The higher it is, the greater your potential to produce power, maintain pace, and resist fatigue.
But here’s what most athletes get wrong: VO₂max doesn’t improve by doing random hard workouts.
It improves through smart, structured stress, and even more importantly, by recovering well enough to adapt.
As both an endurance athlete and coach, I’ve learned that building VO₂max is less about suffering more, and more about applying the right dose at the right time.
VO₂max is influenced by:
Heart stroke volume (how much blood your heart pumps)
Oxygen delivery to muscles
Mitochondrial efficiency
Capillary density
Muscle oxidative capacity
In simple terms: your body’s ability to deliver and use oxygen.
While genetics play a role, training can significantly improve VO₂max ,especially if your training has been inconsistent or poorly structured.
Improving VO₂max helps you:
Sustain higher intensities for longer
Recover faster between efforts
Improve race pace
Increase fatigue resistance
Even in longer endurance events, a higher VO₂max gives you a bigger “engine” to work with.
Think of it like this:
If threshold is how long you can hold speed, VO₂max is how much speed your system can potentially support.
1. Long VO₂max intervals (most effective for trained athletes)
This is one of the most proven methods.
Examples:
4 x 4 min hard / 3 min easy
5 x 3 min hard / 2–3 min easy
6 x 2.5 min hard / 2 min easy
Intensity:
Around 90–95% max heart rate
Hard but controlled
You should finish tired, not shattered
Why it works:
Longer intervals allow more time near your maximal oxygen uptake, which is the key stimulus for adaptation.
Research consistently shows high-intensity aerobic intervals can improve VO₂max more effectively than steady-state training alone. The classic 4 x 4 protocol remains one of the best-supported examples.
2. Short intervals (great for reducing mental load)
Examples:
30/30s x 15–20 min
40/20s x 2 blocks
15/15s
These can:
Feel more manageable mentally
Help maintain higher quality
Reduce local muscular fatigue
But shorter isn’t always better.
Recent data suggests that compared with 3-minute intervals, very short hard reps may lead to less actual time spent near VO₂max, despite feeling harder.
3. High-quality Zone 2 base work
This is the part people ignore.
You can’t build a big aerobic ceiling without an aerobic base.
Zone 2 helps:
Improve mitochondrial density
Improve fat oxidation
Support recovery
Increase training tolerance
The better your aerobic base, the better you can absorb VO₂max sessions.
This is why elite athletes don’t just hammer intervals all year.
4. Strength training (underrated)
Strength training won’t directly spike VO₂max like intervals do, but it improves:
movement economy
fatigue resistance
force production
That means:
you can use your aerobic fitness more effectively.
For endurance athletes, strength is often the missing link.
Doing too much intensity
More suffering ≠ more gains.
Too many VO₂max sessions:
increase fatigue
hurt recovery
reduce quality
No progression
Repeating the same workout every week won’t keep working.
You need:
progression in volume or quality
recovery weeks
timing based on your phase
Poor fueling
Hard sessions without carbs = poor output.
If you want quality:
fuel before
fuel during longer sessions
recover properly
For my clients I use the following numbers as general guideline:
Beginner:
1 hard session/week
Intermediate:
1–2 sessions/week
Advanced:
1–2 key sessions/week in specific blocks
Important: VO₂max work should support your overall program and not dominate it.
For most endurance athletes:
build base first
add VO₂max strategically
protect recovery
Some of my biggest breakthroughs in endurance performance came when I stopped chasing hard sessions all the time.
What made the difference was:
doing VO₂max work with intention,
staying patient with progression,
and making sure my easy days were actually easy.
The best athletes are the ones who can repeat quality work consistently for months.
If you want to improve your endurance, VO₂max training matters, but only inside a bigger system.
The best results come from:
smart intensity,
enough easy volume,
good fueling,
and consistent recovery.
Train hard when it matters, and recover well so it works.
If you want help building a program that actually fits your level, goals, and life, explore the coaching, courses, and tools on this site.
