Your Stroke Length is how far you travel with every arm stroke. To measure this count the number of strokes you take to cover a length of the pool, counting both arms. The fewer strokes you take the longer your stroke.
Your Stroke Rate is how many strokes you take in a minute, counting both arms. For example, 40 Strokes Per Minute (SPM) is a slow stroke rate, 80 SPM is a high stroke rate.
Compare this to gears on a bike.
Swim Smooth believe that the word 'glide' has a lot to answer for! When you add an element of glide into your stroke you introduce a pause. That hurts your rhythm. Imagine riding a bike and pausing on every pedal stroke!
When you glide you also slow down. On your next stroke you have to re-accelerate yourself, which feels hard.
Have you experienced this? Do you have a long stroke but on each stroke it feels hard, like a lot of force is required to maintain the long stroke? That's because you're having to re-accelerate all your body mass on every stroke!
Remove the glide, don't decelerate between strokes and it'll feel easier and be faster.
Find yourself on the chart by entering your stroke rate and swimming pace: