Running Form
There is a big difference between running and running correctly.
The following are 10 running-form principles based on biomechanics and running economy.
Head Position
Look straight ahead, not down or up.
Body Position
The body should have a slight forward lean from the heel to the shoulders.
Stride
Avoid a High or Long Stride.
Stride Turnover
Focus on a relatively fast turnover with ample hip/leg extension.
Foot Strike Position
The foot needs to strike the ground directly under or slightly ahead of the hips
Sweep Don't Pound
When the foot strikes the ground, it should already be moving in a sweeping motion toward the rear of the body.
Pelvis Rotation
The pelvis should rotate by 15-30 degrees.
Leg Extension
Leg extension behind the body should come from the hip, not the lumbar spine.
Arm Movement
Arm movement should primarily come from shoulders, not elbows.
Relax
Keep hands, shoulders, and face relaxed.
Putting It All Together
The video below denotes proper form.