Ground Contact Time
How good ground contact time can improve your running .
What is Ground Contact Time & How is it Calculated
Ground contact time (GCT) is how long your foot stays on the ground with each step. It’s measured in milliseconds and shows how quickly you absorb force, stabilize, and push off. Usually, faster running means shorter GCT, while slower speeds and running uphill make it longer. Still, aiming for the lowest GCT isn’t always best; it depends on the situation.
Your Analysis Report will suggest a GCT based on what an elite runner would have at your speed.
Many modern running watches can measure GCT, as do force/pressure plates and some sensors. Without technology, it is almost impossible to calculate.
Knowing about GCT helps because it shows how efficiently you run and how well your muscles and tendons use elastic energy. If your GCT is too long for your pace, it might mean you’re sitting into your stride, overstriding, lacking ankle or calf stiffness, or losing hip stability. These patterns often make running feel heavy and slow. A longer GCT can also be a sign of fatigue, since it usually increases as you get tired and your form loses its bounce.
How to improve your Ground Contact Time
To improve GCT, focus on better running form and building specific strength. Try increasing your cadence a little, landing your foot closer under your hips, and keeping a tall posture to help you push off the ground faster. Strengthening your calves, hamstrings, and glutes, and adding short strides or hill sprints, can help you apply force more quickly. As your GCT improves, running often feels smoother, more responsive, and less tiring.
Here are five practical ways to improve, and usually shorten, your ground contact time without forcing it:
- Nudge your cadence up slightly.
- Aim for ~+3–7% at your easy/steady pace (use a metronome or music).
- Cue: “Quick feet, same stride length.”
- Add short strides (fast but relaxed)
- After easy runs: 4–8 x 15–25 sec at ~mile/3–5K effort, full easy jog recovery.
- Focus on light contact and tall posture.
- Hill sprints for “snap.”
- 6–10 x 8–12 sec on a steep hill, walk back recovery.
- Hills naturally encourage good mechanics (less overstriding) and fast force application.
- Build ankle/soleus strength + stiffness.
- Do soleus raises (bent-knee) and single-leg calf raises 2–3x/week.
- These improve your ability to absorb and reapply force quickly at mid-stance.
- Clean up landing mechanics.
- Cue: “Land under hips, push back, not up.”
- Many runners lengthen GCT by overstriding/braking; think slight forward lean from the ankles and a quiet, “under you” footstrike.
Happy Running
RUNRIGHT-3D Explainers
Micrometrics
- EGround Contact Time
- EOverstride
- EVertical Stiffness
- EVertical Oscillation
- ECadence
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