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Yasso 800s
A marathon prediction workout involving 800-meter intervals
What Does This Mean?
Yasso 800s are a popular marathon prediction workout developed by Bart Yasso. It involves running 800-meter intervals in minutes and seconds that correspond to hours and minutes of a marathon goal time. For example, if your goal marathon time is 3 hours and 30 minutes, you would aim to run the 800-meter repeats in 3 minutes and 30 seconds.
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