Glossary of Running Metrics

Your reports use a handful of running metrics that may be new to you. This glossary explains each one in plain language. Every metric has a healthy target range, which you can also see by tapping the info (i) button next to it in the app.

One thing to remember: being outside a range isn't a "fail." It simply points to something you might work on. Use these as helpful signposts, not grades.

Your running metrics

Cadence — the number of steps you take per minute while running. Target: greater than 173.

Vertical Oscillation — how much your body moves up and down while you run. Target: 5-9 cm.

Ground Contact Time — how long your foot stays on the ground with each step. Target: < 267 ms.

Contralateral Pelvic Drop — how much your opposite hip drops while you're standing on one leg. Target: -6 to 0 deg.

Forward Lean — the angle your body leans while running. Target: 12-16 deg.

Peak Hip Adduction — the inward movement of your thigh toward the midline of your body. Target: -10 to -4 deg.

Peak Hip Flexion — the maximum forward angle of your hip. Target: > 38 deg.

Peak Hip Extension — the maximum backward angle of your hip. Target: -19 to -14 deg.

Peak Knee Flexion — the maximum bend of your knee while your foot is on the ground. Target: 28-40 deg.

Strike from COM — the distance between where your foot lands and your body's center of mass. Target: <22 cm.

Tibial Inclination — the angle of your shin at the moment your foot strikes the ground. Target: -2 to 4 deg.

Stiffness — your legs' ability to absorb impact and return it for propulsion. Target: >11 kN/m.

Peak Ankle Pronation — the inward roll of your foot after landing. Target: -3 to 1 deg.

Foot Inclination — the angle of your foot at the moment it strikes the ground. Target: -6 to 2 deg.

Peak Ankle Dorsiflexion — the maximum upward angle of your ankle during stance. Target: -25 to -19 deg.

Seeing these on your body

These metrics come to life when you see where they happen on your running form. To connect the terms to the picture, read Understanding the Runner Diagram.