RunBuilder
The ultimate run workout builder—plan intervals, warm-ups, and recovery in a flow that matches how you train.
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Why RunBuilder
Structured workouts
Line up intervals, easy segments, and cool-down in one place so every run has a clear story from start to finish.
Fast to tweak
Change duration, repeats, or effort without losing context—built for last-minute adjustments before you head out the door.
Made for iPhone
A touch-first layout that stays out of your way so you can build and refine workouts with one hand when you’re on the go.
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