Yasso 800s Marathon Predictor

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Predict your marathon finish time using Bart Yasso's classic 800-meter training repeats formula.

Goal Marathon Time (Hours)

Goal Marathon Time (Minutes)

The Yasso 800s Pacing Method

Developed by Bart Yasso, former chief officer of Runner's World, **Yasso 800s** is a popular marathon training benchmark. The theory states that if you can run 10 repeats of 800 meters at a pace of X minutes and Y seconds (with equal recovery intervals), you should be physically capable of completing a marathon in X hours and Y minutes.

سوالات متداول

Start with 4 to 5 repeats early in your training cycle, and build up to 10 repeats 2-3 weeks before your marathon.

Take active recovery (jogging or walking) for the same duration as your target 800m time.