The Coggan power zones are the most widely used system for structuring cycling training around a power meter. Built on seven intensity levels anchored to your functional threshold power (FTP), they tell you exactly how hard to ride for any given workout — from active recovery to all-out sprints. This guide explains where each zone sits, how to calculate yours, and how to train with them effectively.
Many cyclists use these zones to target the “sweet spot” just below threshold; our complete guide to sweet spot training for cyclists offers structured workouts in that band.
What Are the Coggan Power Zones?
Developed by exercise physiologist Dr. Andrew Coggan and popularized in the book Training and Racing with a Power Meter, the Coggan model divides cycling intensity into seven zones. Each zone targets a different physiological system, so by spending the right amount of time in the right zone you can train a specific adaptation — aerobic endurance, lactate threshold, VO2 max, anaerobic capacity, and so on.
What makes the system so useful is that every zone is defined as a percentage of one number: your functional threshold power. Because power is measured directly in watts, it does not lag behind effort the way heart rate does, and it is not affected by heat, caffeine, or fatigue. That makes power zones the most precise way to control training intensity, which is exactly why structured plans like polarized 80/20 training and threshold sessions such as over-under intervals are prescribed in zones.
How to Find Your FTP First
Everything in this system flows from your FTP — the highest average power you can sustain for roughly an hour. You cannot set accurate zones without it. The most common way to estimate FTP is a 20-minute test: warm up thoroughly, ride as hard as you can sustain for 20 minutes, take your average power, and multiply by 0.95. The result is your FTP.
Ramp tests and 8-minute tests are popular alternatives, and many smart trainers estimate FTP automatically. For a full walkthrough of the protocols and how to pace them, see our guide to FTP testing for cyclists. Re-test every six to eight weeks, because as you get fitter your FTP rises and your zones must move with it.
The 7 Coggan Power Zones Explained
Here are the seven zones, expressed as a percentage of FTP, along with what each one trains and how it should feel.
Zone 1 – Active Recovery (under 55% of FTP)
Very easy, conversational spinning. Zone 1 is for recovery rides, warm-ups, and cool-downs. It promotes blood flow and recovery without adding training stress. If you feel like you are barely pushing the pedals, you are doing it right.
Zone 2 – Endurance (56–75% of FTP)
The aerobic base zone, and where endurance cyclists spend most of their time. Zone 2 builds fat-burning efficiency, mitochondrial density, and capillary networks. You should be able to hold a conversation, if a slightly breathy one. Long Zone 2 rides are the foundation of nearly every successful training plan.
Zone 3 – Tempo (76–90% of FTP)
A moderately hard, “comfortably uncomfortable” effort. Tempo work improves muscular endurance and is useful for time-pressed riders, though spending too much time here — the so-called grey zone — can leave you too tired for hard days and not rested enough for easy ones.
Zone 4 – Lactate Threshold (91–105% of FTP)
Riding right around your FTP. This is hard, sustainable-for-minutes-not-hours effort that raises the power you can hold before lactate accumulates faster than you can clear it. Threshold intervals — for example 2 × 20 minutes at 95–105% — are among the most productive sessions a cyclist can do.
Zone 5 – VO2 Max (106–120% of FTP)
Very hard efforts lasting three to eight minutes that develop your maximum aerobic capacity. Classic sessions include 5 × 3 minutes or 4 × 4 minutes with equal recovery. Zone 5 work is uncomfortable and demands full focus, but it raises the ceiling that your FTP can eventually grow into.
Zone 6 – Anaerobic Capacity (121–150% of FTP)
Short, intense efforts of roughly 30 seconds to two minutes that train your anaerobic energy system — the power you need for attacks, short climbs, and bridging gaps. Power varies a lot here, so treat the percentages as a guide rather than a target to hit precisely.
Zone 7 – Neuromuscular Power (maximal efforts)
All-out sprints lasting just a few seconds. Zone 7 is about raw, maximal power and is not meaningfully capped by FTP, which is why it has no upper percentage. Sprint drills and short standing-start efforts develop this top-end power.
How to Calculate Your Zones
Once you have your FTP, the maths is simple: multiply it by the percentage range for each zone. Suppose your FTP is 250 watts. Your zones would look like this:
- Zone 1 (Recovery): below 138 W
- Zone 2 (Endurance): 140–188 W
- Zone 3 (Tempo): 190–225 W
- Zone 4 (Threshold): 228–263 W
- Zone 5 (VO2 Max): 265–300 W
- Zone 6 (Anaerobic): 303–375 W
- Zone 7 (Neuromuscular): 375 W and above
Most head units, training apps, and platforms will calculate these automatically once you enter your FTP — but it is worth understanding where the numbers come from so you can sanity-check them and adjust after each test.
How to Train With Power Zones
Zones are a tool for prescribing the right intensity for the right purpose. A typical week blends a large base of easy Zone 1–2 riding with a smaller dose of hard Zone 4–5 work, and relatively little time in Zone 3. This is the logic behind polarized training, and it is supported by how most elite endurance athletes actually train.
Match the zone to the goal: build your aerobic engine with long Zone 2 rides, lift your sustainable power with Zone 4 threshold intervals, sharpen your top end with Zone 5 VO2 efforts, and always protect your easy days by keeping them genuinely easy. Methodologies such as the Lydiard base-building approach show how to sequence these zones across a season, and a well-timed race taper reduces volume while keeping a touch of zone-specific intensity so you arrive fresh and fast.
Power Zones vs Heart Rate Zones
Power and heart rate measure different things. Power is the work you are doing right now; heart rate is your body’s delayed response to that work. Heart rate drifts upward over a long ride even at steady power, lags at the start of intervals, and is pushed around by heat, hydration, sleep, and stress. Power is immediate and objective.
The best approach is to use both. Power tells you exactly how hard to ride, while heart rate gives context about how your body is coping — an unusually high heart rate for a given power can be an early warning of fatigue or illness. For short, sharp efforts, trust power; for all-day endurance pacing, watch both.
Common Mistakes to Avoid
The most frequent error is training with a stale FTP. If your zones are based on a test from three months ago, every session is now miscalibrated. Re-test regularly. The second mistake is living in Zone 3: it feels productive but accumulates fatigue without delivering the clear benefits of either easy or hard riding. Make easy days easy and hard days hard.
Finally, do not chase numbers on recovery days. The discipline to ride genuinely easy in Zone 1 is what allows you to hit full power when it counts. Used with a little patience and regular re-testing, the Coggan power zones turn a wattage readout into a precise, repeatable training system that will steadily raise your performance.
