Swim Medley Workout Plan: Freestyle-Focused Full-Body Training with Breaststroke and Butterfly

Introduction

In Taiwan’s swimming training culture, there is a very common phenomenon: nearly 90% of all amateur swimmers’ training consists of freestyle. Freestyle is indeed the most efficient stroke in swimming and the best suited for long-distance training, but long-term neglect of other strokes can lead to:

• Muscle imbalance: Freestyle primarily uses the anterior shoulder muscles (pectoralis major, anterior deltoid). Without supplementing with backstroke and butterfly to train the posterior shoulder muscles, shoulder imbalance can easily develop
• Technical plateaus: Freestyle’s body rotation and rhythm often improve through simultaneously practicing the core strength used in breaststroke
• Monotonous training: Repeating the same movements too much reduces the “novel stimulation” for the nervous system, slowing progress

This article provides a medley swim workout design strategy that is freestyle-dominant (70%) with other strokes supplementing (30%).

Physiological Characteristics and Training Value of Each Stroke

Design Principles for Medley Workouts

Principle 1: Functional Placement

Different strokes should be placed in positions within the workout that match their function:

• Warm-up segment: Backstroke (relax the back, warm up the shoulder joints) or breaststroke (hip-opening warm-up)
• Technical supplement segment: Butterfly (strengthen pull explosiveness) or breaststroke (reinforce core)
• Cool-down segment: Backstroke or breaststroke (the strokes easiest to swim at low intensity)

Principle 2: Intensity Allocation

Butterfly has significantly higher intensity than other strokes, and workout design must account for this:

• The energy expenditure of 25m of butterfly is roughly equivalent to 50m of freestyle
• Butterfly training should be scheduled when energy levels are higher (after warm-up, before the main set)
• For beginners learning butterfly, total butterfly volume per session should not exceed 200m

Principle 3: Technical Threshold Considerations

Recommendation: If breaststroke leg movement (whip kick) is performed with incorrect form, it can place lateral stress on the knee joint. Please confirm correct technique before increasing training volume.

Medley Workout Examples

Workout A: Backstroke Supplement (2400m)

• Warm-up: Backstroke 200m + Freestyle 200m
• Technical set: Backstroke single-arm drill 4×25m (correct hand entry position)
• Main set (freestyle): 6×200m, Z2–Z3, 30 seconds rest between reps
• Supplement set (backstroke): 4×100m backstroke, Z2 (posterior back and shoulder supplementary training)
• Cool-down: Easy backstroke 200m

Freestyle/Backstroke ratio: 72% / 28%

Workout B: Breaststroke Core Strengthening (2600m)

• Warm-up: Breaststroke 200m + Freestyle 200m
• Technical set: Whip kick with kickboard 4×50m (feel the contraction of the inner thighs and glutes)
• Main set (freestyle): 5×200m, Z2–Z3, 30 seconds rest between reps
• Breaststroke supplement: 6×100m breaststroke, Z2 (focus on core control, not speed)
• Cool-down: Easy freestyle 200m

Freestyle/Breaststroke ratio: 69% / 31%

Workout C: Butterfly Explosive Power (2800m)

• Warm-up: Freestyle 400m + Backstroke 100m
• Technical set: Dolphin kick (body undulation) 4×25m, performed on the back holding a pull buoy
• Butterfly strength set: 8×25m butterfly (all-out effort, full 60 seconds rest between reps)
• Main set (freestyle): 8×150m, Z3, 45 seconds rest between reps
• Mixed cool-down: Butterfly 50m + Backstroke 50m + Breaststroke 100m + Freestyle 100m

Freestyle/Butterfly/Other ratio: 70% / 10% / 20%

Advanced Application: Individual Medley (IM) Training

If you want to train all four strokes more systematically, you can incorporate “Individual Medley (IM)” training:

IM order: Butterfly → Backstroke → Breaststroke → Freestyle

IM training set design suggestions:

• 4×100m IM (25m of each stroke): interval set, 45 seconds rest between reps
• 2×200m IM (50m of each stroke): endurance version, 60 seconds rest between reps
• 1×400m IM (100m of each stroke): advanced challenge, timed test

IM training quickly reveals your weakest stroke. The transition from butterfly to backstroke is typically the most difficult technique to master.

Frequently Asked Questions

Q: My ankle always gets strained with breaststroke. Should I keep training it?

A: If ankle joint flexibility is insufficient, the whip kick can easily place stress on the lateral ankle. It is recommended to first do ankle flexibility training and confirm you can comfortably point your toes toward your shin (dorsiflexion) before increasing breaststroke training volume.

Q: I can’t learn the butterfly arm movement. Is there a shortcut?

A: First, only practice the dolphin kick (without using your arms). Once the core rhythm is established, then add the arm movement. Many people find butterfly exhausting because their arms and core are not synchronized.

Practical Recommendations

• Have at least one “pure breaststroke training day” per week; 200–400m of breaststroke training can significantly strengthen the core and hip flexor muscles
• Backstroke is the best “active recovery” stroke; after any high-intensity training, you can use easy backstroke for cool-down
• Film underwater video of yourself to check your whip kick form, confirming it is “outward rotation → kick → recover legs” rather than kicking backward
• Do not increase butterfly volume too quickly; beginners should add no more than 100m of butterfly training volume per month

Conclusion

Medley training is not just about making workouts more interesting—it is an important strategy for comprehensively developing swimming ability. Using freestyle as the foundation, supplemented by backstroke for muscle balance, breaststroke for core strength, and butterfly for explosive power, will make you a more well-rounded swimmer who is less prone to injury. Try dedicating 30% of your training volume to non-freestyle strokes in your next training cycle, and feel the different stimulus that full-body training provides.

Related Reading

• Medley Swimming Training: How Balanced Four-Stroke Training Benefits Individual Strokes
• Medley Swimming Training: Weekly Workout Scheduling for Training All Four Strokes
• Medley Swimming Training: Energy Allocation and Technical Challenges of 25m per Stroke
• IM Individual Medley Workout Design: Strength and Endurance Training with Four-Stroke Rotation