Agility Ladder — High Knees: A Complete Guide
Quick Intro
Agility Ladder — High Knees is a ladder running drill performed by running the length of an agility ladder, placing one foot in each rung while driving the knees up toward hip height with every step. It’s dosed by passes through the ladder and layers a running-mechanics demand on top of basic ladder footwork.
Equipment Needed
Agility Ladder — High Knees needs one Agility Ladder, laid flat on the ground, the only equipment this drill requires.
Why Agility Ladder — High Knees Matters
Driving the knee up toward hip height on every single step asks the hip flexors (iliopsoas) to work far harder than a normal running stride does, since the ladder’s rung spacing forces a full knee lift on nearly every foot placement. The front of the thigh (quadriceps, rectus femoris) extends the knee back down into each rung, the calf (gastrocnemius) and deeper calf muscle (soleus) manage the quick, repeated ground contacts and the glutes (gluteus maximus) and back of the thigh (hamstrings, biceps femoris) drive the leg back down and into the next stride. The shin (tibialis anterior) lifts the foot clear on the way up, and the abdominal wall (rectus abdominis) braces the trunk to keep the torso upright through the repeated knee drive. Speed and agility are the two main demands, in equal measure, since high-knee mechanics carry over directly into sprinting form.
When to Do It
This drill works well as a running-mechanics primer early in a session, once the legs are warm but before any sprint work that depends on the same knee-drive pattern. It also fits naturally alongside the other ladder patterns as part of a broader footwork block.
Anyone with a current hip flexor or hamstring issue should approach this carefully, since the repeated forceful knee drive loads the front of the hip in a way most other ladder patterns don’t.
Getting Ready
A few minutes of easy jogging raises blood flow to the hips and legs before the demanding knee drive begins. A handful of slow marching steps through the ladder, focused purely on reaching full knee height without any attempt at speed, previews the pattern before pace is added.
Step-by-Step Instructions
1. The setup. Stand at one end of the ladder, facing down its length, feet together just behind the first rung.
2. The drive. Lift the lead knee to hip height and step it into the first rung, landing on the ball of the foot.
3. The alternate. Immediately drive the opposite knee up to hip height and step it into the next rung.
4. The rhythm. Continue alternating knee drives through every rung to the end of the ladder, pumping the arms in time with the legs.
How Many, How Often
Agility Ladder — High Knees is dosed by passes through the ladder, with knee height taking priority over pace at every level.
| Level | Where you’re at | What to do |
|---|---|---|
| Beginner | New to driving the knees this high through the ladder | 3 to 4 passes, slow and deliberate, focused entirely on reaching full knee height on every step. |
| Intermediate | Knee height holds steady at a moderate pace | 4 to 5 passes at a controlled, rhythmic pace. |
| Advanced | Knee height and rhythm both hold up at speed | 5 to 6 passes, or move toward Agility Ladder — High Knees — Arms Drive once pace no longer costs knee height. |
Reaching full knee height on every single step matters more here than how fast the ladder gets covered, since a knee that stops rising to save time has quietly turned this into a different, less useful drill.
Modifications and Variations
Agility Ladder — High Knees has one harder step.
For more difficulty, Agility Ladder — High Knees — Arms Drive keeps the identical knee-drive pattern but adds a deliberately exaggerated, forceful arm swing on top of it, raising the coordination and power demand without changing the underlying footwork.
Progression path: knee height and rhythm mastered here first, then the same pattern repeated with a deliberately more forceful arm drive once the legs alone hold up cleanly at speed.
Common Mistakes to Avoid
Letting knee height drop as pace increases. Chasing speed at the cost of knee height defeats the entire point of this drill, since it’s the height of the drive, not the speed of the feet, that trains anything useful here. Slowing back down the moment knee height starts to slip keeps the drill doing its job.
Leaning the torso back to make the knee drive feel easier. Tilting backward makes it easier to snap the knee up but strips out the trunk control this drill is supposed to build alongside the hip flexors. Keeping the chest tall and the torso stacked over the hips through every step keeps the drive productive.
Landing flat-footed instead of on the ball of the foot. A flat landing slows the transition into the next knee drive and adds unnecessary impact through the heel. Staying on the balls of the feet throughout keeps the rhythm quick and the landings light.
After Your Set
The hip flexors take on a repeated load through a full set of high-knee passes, so a couple of minutes of easy movement is a reasonable way to transition into stretching. A kneeling hip flexor stretch, back knee down and the hips eased gently forward, releases the hip flexor (iliopsoas) that drove every knee lift. Lying on one side and drawing the top heel back toward the seat opens the front of the thigh (quadriceps, rectus femoris) that extended each leg back down.
Going Deeper
This drill earns its place directly ahead of sprint work in a session, since driving the knees this high through the ladder rehearses the exact hip-flexor action a fast sprint stride depends on. It also pairs well with the other ladder patterns, giving the hip flexors targeted work the lateral and rotational ladder drills don’t provide on their own.
Progress here tends to stall on hip flexor endurance rather than raw speed: an athlete can hit full knee height for the first several rungs and then quietly lose height as the hip flexors fatigue partway through a pass. Shortening each pass and rebuilding full height at that shorter length, rather than grinding through a full-length pass where height has already dropped, tends to build hip flexor endurance faster.
Someone new to this drill generally needs a session or two just to find a knee height that holds for a full pass, and continues adding pace over the following few weeks as hip flexor endurance improves.
How to Know You’re Improving
- Knee height reaches hip level on every single step, from the first rung to the last
- The torso stays tall through the entire pass, with no backward lean creeping in
- The feet stay on the balls throughout, with no flat-footed landings
- Full knee height holds up as pace increases toward the arms-drive version
Knee height held steady from the first rung to the last, not how fast the ladder gets covered, is what marks progress here.
Muscles Worked
- Iliopsoas (the deep hip flexor, lifting each knee to hip height on every step)
- Rectus Femoris (a front thigh muscle that crosses both the hip and knee, assisting the knee lift from the thigh)
- Gastrocnemius (a calf muscle, bouncing the foot off the floor between knee lifts)
- Gluteus Maximus (the largest glute muscle, pushing the support hip down as the other knee comes up)
- Biceps Femoris (a muscle at the back of the thigh, pulling the raised foot back down to the floor)
- Tibialis Anterior (a muscle along the front of the shin, holding the lifted foot cocked under the knee)
- Soleus (a deeper calf muscle beneath the gastrocnemius, absorbing the landing on a tall knee drive)
- Rectus Abdominis (the abdominal muscles running down the front of the stomach, stopping the hips tipping back as the knees rise)
FAQ
Why does this drill demand so much more from the hip flexors than normal running? A normal running stride only lifts the knee to full height briefly before extending back down, while this drill forces that same full lift on nearly every step through the ladder, turning an occasional demand into a repeated one (see Why It Matters above).
Is it normal for my hip flexors to feel tired quickly the first few times? Yes, since most people rarely load the hip flexors this directly or this often. That fatigue tends to ease as hip flexor endurance builds over the following few weeks (see Going Deeper above).
How is this different from Agility Ladder — Two Feet In Each Box? Two Feet In Each Box places both feet in every rung without any specific knee-height demand, while this drill places one foot per rung and makes full knee drive the entire point of the pattern (see Step-by-Step Instructions above).
Should this replace regular sprint drills? No. It’s a mechanics primer that rehearses one specific part of a good sprint stride, not a substitute for sprinting itself, and works best placed directly before sprint work in the same session.
Part of the agility ladder family, alongside Agility Ladder — Two Feet In Each Box and Agility Ladder — Lateral In-Out.