How to Improve Running Speed: A Data-Driven Approach

Most recreational runners plateau not because they lack aerobic fitness, but because they haven't addressed the mechanical and strength factors that determine speed. Here's what actually works.

The three pillars of running speed

• —Stride length and cadence: Speed = stride length × cadence. Most runners can improve both with targeted work.
• —Leg stiffness: The ability of the leg to act like a spring — storing and returning elastic energy with each stride. This is trainable through strength and reactive work.
• —Running economy: The oxygen cost of running at a given pace. Strength training, particularly heavy lower body work, consistently improves running economy.

What gait analysis tells us

RunScribe pods measure braking g-force, cadence, foot strike angle, and contact time in real time. Reducing braking force — caused by overstriding — alone can improve your pace without any change in fitness. These are mechanical inefficiencies that don't show up in training data but do show up in race results.