Interval Calculator

Get target splits for track workouts and Yasso 800s

How It Works

Enter a recent race result to get target splits for track workouts across all training zones — from speed reps to threshold intervals.

Browse curated workouts →Find your VDOT →Get heart rate zones →

Your Race Result

Race Distance

Your Finish Time

Hours

:

Minutes

:

Seconds

Optional: Marathon Goal for Yasso 800

Marathon Goal Time

Hours

:

Minutes

:

Seconds

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Frequently Asked Questions