Ever wondered what happens when you combine the two most powerful strokes in swimming? The result is "Butterfrog," an old-school hybrid stroke that merges the arms of butterfly with the kick of breaststroke.
While you won't see it in the Olympics, this unique stroke is a fantastic drill for mastering the timing of butterfly and adding some fun variety to your training. This lesson will show you how it works, and even introduce you to its opposite: the "Breastfly" drill.
The Butterfrog is a combination of butterfly (also called dolphin) and breaststroke, which are both called short-axis strokes. They both work from a pivot point in the hips and create an undulating motion forward.
The major distinction between the two strokes is the arm recovery. Butterfly recovers above the water, and breaststroke recovers right at the surface. The true butterfly uses an undulating dolphin kick, and breaststroke uses a frog-like kick.
Since the two swimming strokes are quite similar, it is not as hard to combine them. The resulting stroke uses butterfly arms with a breaststroke kick. While it is still considered legal to use in competitions, the speed of the stroke is very slow and not recommended for racing.

Rhythm and timing are the most difficult aspects of short-axis strokes, and a good undulating motion is critical.
Watch carefully how the legs complement the arms in this video.
And here is another video that shows you how to slow the Butterfrog down, so you can work on the technique.
How about trying it the opposite way? Breaststroke arms and butterfly legs.
This is actually a very common breaststroke drill which teaches you a nice body undulation and lets you strengthen your arms, especially if performed with paddles.
See the video below on how to do the Breastfly drill:
In summary, if you do struggle with butterfly, the Butterfrog stroke can be a great substitute to teach the correct arm motions. Most of all, these hybrid strokes can be a great break from the everyday monotonous practice. So give it a go!
Butterfrog is a hybrid swimming stroke that combines the powerful, over-the-water arm recovery of butterfly with the whip-like kick of breaststroke. It is an old-school stroke that is still legal in competition.
No, Butterfrog is very slow and not recommended for racing. However, it is an excellent drill for learning the timing and rhythm of the butterfly arm motion in a more controlled way. It's also a great way to add variety to your workout.
Yes. According to swimming rules, using butterfly arms with a breaststroke kick is a legal stroke, though it is not competitive.
Breastfly is the opposite of Butterfrog. It's a common drill that combines the breaststroke arm pull with the undulating dolphin kick of butterfly. It's great for teaching body undulation and building arm strength.
Both are 'short-axis' strokes, meaning they create an undulating, wave-like motion that pivots at the hips. This shared foundational movement is what allows their arm and leg motions to be mixed.
Comments (5)
Sometimes it is hard to switch between the different kicks. hehe