A bad freestyle kick creates drag instead of propulsion. A good kick isn’t about kicking harder — it’s about kicking correctly. Here’s what that looks like and how to train it.
The Mechanics of a Good Freestyle Kick
A correct freestyle kick originates from the hip, not the knee. The knee bends slightly on the downkick but the primary power comes from the hip flexors and gluteals rotating the entire leg.
Ankles should be flexible and toes pointed (plantar-flexed). Stiff, upright feet create drag.
Common errors:
- Kicking from the knee (bicycle kick) — creates drag, low propulsion
- Kicking too wide — feet breaking the surface plane
- Kicking too fast (without ankle flexibility) — wastes energy, minimal propulsion
- Kicking too slowly (inconsistent rhythm) — hips drop between strokes
How Many Kicks Per Stroke Cycle?
Most recreational swimmers use a 2-beat kick (one kick per arm stroke). Elite sprinters use 6-beat.
For distance swimming and triathlon, 2-beat is efficient. For sprint speed, 6-beat provides more propulsion. Learn 2-beat first — it’s the foundation.
Kick Drill 1: Kickboard
What it isolates: Kick mechanics without the complexity of the arm stroke.
How: Hold a kickboard in front of you, arms extended. Kick across the pool. Focus on: kick from hip, pointed toes, narrow kick width (feet shouldn’t break the surface much).
Sets: 4×50m kickboard, :20 rest.
Common mistake: Kicking hard without flexible ankles. If your ankles are stiff, spend time on ankle flexibility before expecting kick improvement.
Kick Drill 2: Kick on Side
What it isolates: Kick mechanics in the same body position as actual freestyle.
How: Kick on your side, bottom arm extended, top arm at your hip. Head naturally positions itself with one goggle in, one out. Kick steadily.
Sets: 4×50m alternating sides, :20 rest.
This is a better drill than kickboard for swimmers who tilt their hips during normal kicking.
Kick Drill 3: Vertical Kicking
What it isolates: Kick power and ankle flexibility, with immediate feedback.
How: In the deep end, tread water using only your legs (arms crossed over chest or at your sides). You’ll quickly feel whether your kick is strong enough to hold you up.
Sets: 3×30 seconds vertical kicking, :30 rest.
If your feet creep up toward your knees, you’re bending too much at the knee. Aim to keep the kick narrow and driven from the hip.
Ankle Flexibility Work
If your SWOLF doesn’t improve after kick drill work, ankle flexibility is likely the bottleneck.
Daily: 5 minutes of ankle circles and forward toe-point stretches. Sit on your shins if you can (kneeling position), pointing your feet back. This develops the range of motion needed for an efficient kick.
Results from flexibility work appear in 3–4 weeks of daily practice.