Learn to train at the perfect intensity with our comprehensive guide to effort zones, RPE scale, and heart rate training.
Rate of Perceived Exertion (RPE) is a subjective measure of how hard you feel you're working. Move the slider to explore different effort levels.
Steady Zone • Moderate effort that requires some concentration.
Should be able to hold full conversations. Most of your training.
Comfortably hard. Some conversation possible. Quality training.
Very challenging to all-out. Short intervals only.
Master each training zone with detailed descriptions, training tips, and practical applications. Click on any zone below to explore its characteristics.
Easy, comfortable effort
Comfortable and relaxed. This should be your "default" running pace for most training.
Calculate your personal heart rate zones based on your maximum heart rate. These zones correspond to the effort levels above.
Estimate: 220 - your age, or use a lab-tested value
This calculation is only an estimation based on age formulas and may be completely different from your actual maximum heart rate. For accurate results, consider a lab test or consult with a sports physician or qualified coach.
Maximize your training effectiveness with these expert insights.
Start each training block with a field test to establish your current zones
Spend 80% of your time in easy zones (RPE 1-4) for optimal adaptation
Use RPE as your primary guide - heart rate can lag behind actual effort
Practice recognizing effort levels during different weather conditions
Recovery runs should feel genuinely easy - you should be able to hold a conversation
High-intensity intervals should feel challenging but controlled - avoid all-out efforts
Running easy days too hard - this prevents proper recovery and adaptation
Not running hard days hard enough - you need sufficient stimulus for improvement
Relying solely on pace - effort should be your primary guide
Ignoring environmental factors like heat, humidity, and elevation
Training at the same moderate intensity for every run
Comparing your zones to other runners - everyone is different
Apply these effort levels to your training with our curated workout library. Each workout includes detailed effort guidance.
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