This awesome chart tells you how much Power you need to qualify for the Boston Marathon. Using Either STRYD or the Power2run App!

Calculate your current VDOT and training paces. See how the correlate with your Power training ranges.

Calculate your aerobic training heart rate here!

Use these awesome calculators to calculate Pace/Make Pace wrist bands/Calculate age graded efforts and much more

Calculate running paces taking into account temperature/humidity and wind speed!

Use this handy calculator to learn the best training plan and training paces for you. Based on your information, it tells you the optimal training paces for each and every one of your runs and predicts your race times – both what you can run now and what you can run when you get into your goal shape. Just enter your info below and hit the Calculate My Paces button. Simple as that!

Pace calculator can help you figure out the average pace for your most recent race or workout by simply inputting the length of time you ran and the distance you covered. It can also use pace and distance to help you calculate time and your overall time and pace to help solve for distance.

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The training pace tool will help you determine your training intensity based upon a recent race performance by measuring the rate and volume at which oxygen is consumed per minute.

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Calculate your paces for Ultra marathon events. Or run with mid zone aerobic Power.

Where do you stack up in your age group?