Episode Overview
The 40-yard dash may be the most talked-about sprint in American sports — and the most misunderstood.
In this episode of The Fast Lane, Chris Kerr sits down with Dan Fichter and Chris Korfist to break down what truly determines elite 40-yard dash performance, why most “4.4s” aren’t real, and how force, projection, limb velocity, and nervous system readiness dictate speed far more than traditional weight-room metrics.
This conversation blends biomechanics, applied physics, neurology, and coaching reality, offering a no-nonsense look at what actually transfers to faster sprint times.
Key Topics Covered
Why Most Athletes Can’t Run a Real 4.4
- Why a 24” vertical jump or 11.5s 100m automatically disqualifies a true 4.4
- The difference between coach-timed, combine-timed, and true electronic times
- Why elite speed “looks different” the moment you see it
The Start Is Everything
- Why horizontal projection matters more than raw strength
- How poor shin angles act as a brake before the sprint even begins
- Why “crowding the line” kills acceleration
- Ideal first-step projection distance
Force, Power & Body Weight Explained (Simply)
- Force per body weight as the real limiter of acceleration
- Why elite starters cluster around ~8 N/kg
- How watts per kilogram explain why lighter athletes separate later
Neurology, Falling & Speed Permission
- Speed as a permission granted by the brain
- Why falling is a trainable skill
- How vestibular input, tendon stiffness, and threat perception affect sprinting
- Why kids who fell more growing up often end up faster
Foot, Ankle & Heel Mechanics
- Why plantarflexion is non-negotiable for acceleration
- What a “floating heel” tells you instantly
- How foot stiffness influences shin angles and projection
- Why weak feet sabotage otherwise strong athletes
Weight Room Reality Check
- Why squats and power cleans don’t guarantee speed
- When more force actually makes athletes slower
- Why positioning > load
- How bodyweight manipulation changes force-velocity profiles
Technology & Measurement
- How the 1080 Sprint changes how coaches understand speed
- Why time splits reveal more than full 40s
- Fly-10 and Fly-20 benchmarks that actually matter
- Why video + timing beats guesswork
Episode Timeline Highlights
- 0:00–10:00 – Quick-style reps, rebounds, and extreme isometrics
- 10:00–25:00 – The myth of the 4.4 & combine timing realities
- 25:00–40:00 – Force, projection, and limb velocity explained
- 40:00–55:00 – Neurology, falling, and vestibular training
- 55:00–70:00 – Indoor training solutions & first-step development
Key Coaching Takeaways
- The 40-yard dash is won before the first foot hits the ground
- Projection without limb speed creates early braking
- Athletes don’t need more force — they need better force application
- Speed training without neurology is incomplete
- If your athlete can’t fall safely, they can’t accelerate aggressively
Memorable Quotes
“Gravity never fails — and the earth never misses.”
“Speed is permission. The brain decides how fast you’re allowed to go.”
“Everyone is fast. Everyone is strong. Most just can’t display it.”
“A real 4.4 looks different the moment you see it.”
The post The Fast Lane Episode 5: The Truth About the 40-Yard Dash appeared first on SimpliFaster.
