What Is Stroke Rate?
Swim speed comes from finding the right balance between stroke rate and stroke length.
Stroke length: how far you travel with each stroke
Stroke rate: how many strokes you take per minute (both arms)
You can also think of stroke rate as strokes per length.
Why Stroke Rate Matters
Stroke rate is a good indicator of rhythm and timing:
Too low → slow arm turnover and “dead spots” in your stroke
Too high → short, inefficient strokes that lose distance per stroke
The goal is to increase stroke rate without losing stroke length.
What Is Your Optimal Stroke Rate?
There’s no single “perfect” stroke rate — it depends on factors like:
Height and arm length
Flexibility and strength
Pool vs open water
Race distance
As a general example:
Many age-group triathletes swim 50 m in 38–52 strokes
This equals roughly 54–64 strokes per minute (spm)
Elite swimmers often use much higher stroke rates:
Ian Thorpe: ~77 spm
Alistair Brownlee: ~95 spm (open water often requires higher rates due to conditions)
How to Measure Your Stroke Rate
You can measure stroke rate manually:
Swim at your goal race pace for 15 or 30 seconds
Count your strokes
Multiply:
15 seconds × 4
30 seconds × 2
Repeat a few times and take the average
Or use a device:
Many Garmin, Polar, and Suunto watches
Finis Swimsense or similar swim trackers
How to Improve Your Stroke Rate
Once you know your stroke rate, you can work to optimise it:
Swim fins: lift your body position and encourage faster arm turnover
Water polo drill (head up freestyle): reduces glide and increases turnover
Strong push-offs: help maintain speed and rhythm
Tempo trainers (e.g. Finis Tempo Trainer): keep you locked into a target stroke rate
Key Takeaways
There’s no one-size-fits-all stroke rate
You’ll swim faster by increasing stroke rate while maintaining stroke length
Stroke rate reflects fitness and strength
Stroke length is more technique-focused
Test your stroke rate, work on it with drills, and retest after a few weeks to track improvement.
Copyright MyProCoach® Ltd © November 2019. All rights reserved.
Comments
0 comments
Please sign in to leave a comment.