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Running Performance Calculator

You can find your age graded percent and a list of equivalent performances at other distances here. Just enter a few details about your race below and we'll do the rest.

Race Type

How does it work?

This tool combines both an age graded percentage calculator and a equivalent performances calculator into one. To calculate your age graded percent (often abbreviated AGP or AG%), we take your time and divide it by the world record time at that distance. Then, depending on your age, we multiply the resulting percentage by the appropriate WMA Factor.* The result is your age graded percent.

Then, we take that AG% and use it to calculate what an equivalent performance** would be at each of our standard race distances, and return them to you in a table. So, for example, you can plug in your most recent 10K time and get an estimate of how fast you should be able to finish a half marathon. This can be very helpful for determining what pace you should aim for in your next race.

We have gathered our world records from a variety of sources. First, we grabbed all that were published by the IAAF both for men and women. In the distances that had both a road time and a track time (for example, the 10K and the 10,000), we used the road time. Because the IAAF doesn't publish times for all the distances we wanted to use, we used other sources as well. To see a complete list, visit our World Records page.

* We are using the 2006 age-grading factors found on Howard Grubb's website. If you're interested, you can download them as an Excel file here.

** By equivalent performance, we mean another run with the same age graded percent. Of course, training for a 100 meter dash is ridiculously different from training for a 100 mile race, so just because the calculator gives you an equivalent time doesn't mean you'll automatically be able to run it. You still have to train appropriately. And, even so, your body might be better suited to run either short races or long ones so you might not be able to get to the same AG% for all distances.

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