Rhythm zones in the race: what they are and what each one is for

Running training zones divide the intensity of effort into different levels, each with a specific physiological objective. Understanding them allows you to train more efficiently, improve performance and avoid overtraining and ineffective training.

In the TrainerPlan, the zones can be based on rhythm, heart rate or power, but the goal is always the same: to structure the training according to the intensity.

Why train for zones?

Training by zones allows you to work with specific power systems. Not all workouts should be difficult, not all smooth. The actual improvement comes from the correct combination of low, medium and high intensities.

in general:

  • Low intensity develops aerobic base
  • average intensities improve resistance at sustained rhythms
  • high intensities improve maximum performance and speed

Explanation of each zone

Zone 1 – Recovery

is the lowest intensity. The effort is very peaceful and you can have a conversation without difficulty.

It is used to facilitate recovery, improve circulation and help the body assimilate previous training. It is essential after demanding sessions or competitions.

Zone 2 – Aerobics

It is a comfortable and sustainable intensity for long periods. You can still speak relatively easily.

This is the most important area for most runners as it builds the aerobic base. Improves cardiac efficiency, lung capacity and energy use. Most of the training volume must be done here.

Zone 3 – Time

Here the effort is already moderate. Breathing gets deeper and the conversation becomes more difficult.

It is used to improve the ability to maintain constant rhythms for longer. It is especially useful for preparing distances like 10K or half marathon.

Zone 4 – Subthreshold

It is a high intensity intensity, close to the sustainable limit. It can only be maintained for relatively short periods.

The goal is to improve the lactate threshold, that is, the ability to run fast without rapidly accumulating fatigue.

Zone 5A – Super Lime

It is located just above the limit. The effort is demanding but controlled.

Helps improve high-rate tolerance and expand the performance zone.

Zone 5B – aerobic capacity

It is a very high intensity, close to VO2max. It can only be kept for a few minutes.

It is used at intervals to improve maximum oxygen consumption, that is, the maximum capacity of the body to produce energy aerobically.

Zone 5C – Anaerobic capacity

is the maximum intensity. The effort is explosive and can only be maintained for a few seconds.

Here the body depends mainly on the anaerobic system. The speed, power and ability to make very intense efforts are worked on.

Difference between aerobic and anaerobic zones

A common question is to think that there are several areasaerobicsNo clear difference. In fact, there is a progression.

Zones 1 and 2 are clearly aerobic and should be the basis for training. Zones 3 and 4 are still mainly aerobic, but with greater physiological stress.

Zone 5B, although very intense, still has a strong aerobic component. However, the 5C zone is already considered predominantly anaerobic, as the body produces energy without sufficient oxygen.

How to apply zones to your training

A good training structure combines all zones, but with a predominance of low intensities.

In most cases:

  • Most of the time you train in Zone 2
  • Specific sessions are added in Zones 3 and 4 to improve the pace
  • Intervals are included in Zones 5 to work on maximum performance

The balance between these zones is what makes it possible to progress consistently and safely.


Now that you understand how each zone works, the next step is knowing exactly what yours are. No guessing, no approximations. Use our pace zone calculator to get precise training zones in seconds and start training smarter today 👉 https://www.trainerplan.co/es/zone-pace-calculator/