What is Maximal Aerobic Speed?

MAS is the minimum running speed at which VO2 max is reached. It is a key training reference point used to set interval, tempo, and easy run pace zones.

How is MAS used in training?

Training zones are expressed as percentages of MAS: easy runs at 65-75% MAS, tempo runs at 85-90% MAS, and VO2 max intervals at 100-110% MAS.

How do I do the 1000m test?

After a warm-up, run 1000m at maximum effort. Record the time in seconds. The formula divides 3600 by your time to give MAS in km/h.

Maximal Aerobic Speed (MAS) from 1000m Time

Calculate Maximal Aerobic Speed from your best 1000m time. MAS (km/h) = 3600 / time_in_seconds.

Core Tools

Distance covered in 12 minutes (meters)

🏅 Sports Note: These calculators provide estimates based on population data and validated formulas. Individual results vary by physiology, training level, and testing conditions. Consult a qualified coach or sports scientist for personalized guidance.

How It Works

Calculate Maximal Aerobic Speed from your best 1000m time. MAS (km/h) = 3600 / time_in_seconds

Each component has a specific meaning:

Best 1000m time — The best 1000m time recorded for the scenario being assessed.

Note: Interpret the mas from 1000m result against the thresholds and context described above.

How to Use

Enter the best 1000m time for the scenario you are assessing. Calculate Maximal Aerobic Speed from your best 1000m time. MAS (km/h) = 3600 / time_in_seconds. Use the mas from 1000m result to inform your calculation.

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