Stroke Lengthening Drills: Maximizing IM Efficiency

In the Individual Medley (IM), swimmers must combine four strokes—butterfly, backstroke, breaststroke, and freestyle—into one seamless race. While speed is important, efficiency is often what separates good IM swimmers from great ones. One of the key efficiency tools is stroke length. By swimming longer per stroke, athletes expend less energy over the same distance, allowing them to maintain pace and endurance.

Why Stroke Length Matters in IM

Stroke length—the distance traveled per stroke—is a direct indicator of efficiency. A longer, well-executed stroke allows swimmers to:

• Reduce the number of strokes per lap

• Conserve energy for later strokes

• Maintain smoother rhythm and balance

• Improve overall race endurance

Without proper stroke length, swimmers often overcompensate with extra strokes, creating fatigue and reducing speed.

Principles of Stroke Lengthening

Before practicing drills, swimmers should focus on:

1. Full Reach: Extend arms fully in each stroke without sacrificing technique.

2. Strong Pull: Engage the water effectively to maximize propulsion.

3. Core Stability: Keep hips and torso aligned to reduce drag.

4. Controlled Breathing: Avoid disrupting rhythm during strokes.

5. Relaxed Recovery: Minimize tension in the recovering arm to maintain fluidity.

Stroke-Specific Stroke Lengthening Drills

1. Butterfly: Single-Arm Fly

How to do it:

• Swim butterfly using one arm while the other remains extended forward.

• Focus on a long, smooth pull and body rotation.

Benefits:

• Improves distance per stroke

• Encourages proper catch and extension

2. Backstroke: 3-3-3 Drill

How to do it:

• Perform three strokes right arm only, three left arm only, then three full strokes.

• Focus on maximum reach and a strong finish through the water.

Benefits:

• Enhances body rotation and arm extension

• Encourages longer strokes without losing balance

3. Breaststroke: Glide Drill

How to do it:

• Execute a full pull and kick, then pause in streamline position before the next stroke.

Benefits:

• Maximizes distance per stroke

• Teaches patience and proper glide mechanics

4. Freestyle: Catch-Up Drill

How to do it:

• One arm remains extended forward until the other arm “catches up.”

• Emphasize full extension, smooth pull, and long glide.

Benefits:

• Improves stroke efficiency and body alignment

• Encourages longer strokes with better rhythm

How to Integrate Stroke Lengthening Drills into IM Training

Sample IM Stroke Length Set:

• 2 × 50m Butterfly – Single-Arm Drill

• 2 × 50m Backstroke – 3-3-3 Drill

• 2 × 50m Breaststroke – Glide Drill

• 2 × 50m Freestyle – Catch-Up Drill

• 2 × 100m IM – Apply stroke length focus

Tips:

• Focus on quality over speed during drills

• Incorporate stroke length awareness into full IM swims

• Monitor progress by counting strokes per length

Common Mistakes to Avoid

• Overreaching and losing technique

• Rushing through the glide phase

• Neglecting core engagement, leading to drag

• Forgetting proper breathing patterns

Signs of Improved Stroke Length

• Fewer strokes per lap while maintaining speed

• Smoother transitions between strokes in IM

• Less fatigue during longer sets

• Increased glide and body stability in all four strokes

Final Thoughts

Stroke lengthening drills are a cornerstone of IM efficiency. By focusing on full reach, strong pulls, and smooth glide, swimmers can maximize propulsion while conserving energy. Over time, this approach not only improves lap times but also makes the swimmer more durable and consistent across all four strokes.

Remember: In IM, every inch counts. Maximize each stroke, and the results will follow.