WorkoutsPublished on · Updated on 2 min read

How to Structure a Professional Swimming Workout

Swimer Team

International swimming coaches and high-performance technicians with 40+ years of combined experience.

Quick summary: A professional session has 5 blocks: warm-up (400-800m), technique (200-400m), main set (800-1,800m), supplementary (200-600m) and cool-down (100-300m). This structure maximizes every minute in the water.

The structure of a swimming workout is what separates a productive session from just "swimming laps." A well-organized workout maximizes every minute in the water, trains all necessary qualities and prevents injuries.

The 5 parts of a professional session

BlockDuration% of sessionObjective
Warm-up400-800m15-20%Cardiovascular and muscular activation
Technique200-400m10-15%Improve efficiency
Main set800-1,800m40-50%Primary physiological stimulus
Supplementary200-600m10-20%Additional volume, kick/pull
Cool-down100-300m5-10%Recovery, decompression

1. Warm-up (400-800m)

Objective: activate the cardiovascular system and prepare muscles. Includes easy swimming varying strokes, kick with board and progressive sets. Never start with the main set directly — cold muscles perform worse and are more prone to injury.

Example: 400m (100 free easy + 100 backstroke + 100 free progressive + 100 kick)

2. Technique block (200-400m)

Technical drill sets to improve swimming efficiency. This block comes before the main set because technique is best learned without fatigue. Under fatigue, your body falls back on established patterns — not the new ones you're trying to learn.

Example: 4×75m (25 catch-up + 25 fist drill + 25 full stroke) with 15"

3. Main set (800-1,800m)

The heart of the workout. This is where intensity zones are applied based on the session's objective: endurance (A1-A2), threshold (A3-TH) or speed (VO₂-LAC). Exact paces come from your CSS.

4. Supplementary (200-600m)

Kick work, pull buoy sets, secondary strokes or sets with fins. Adds aerobic volume without the main set's load and works specific aspects like kick or upper body.

5. Cool-down (100-300m)

Easy swimming, dynamic stretching in the water and decompression. Gradually lowers heart rate and promotes recovery for the next session.


Complete session examples

Endurance session (3,000m)

  • Warm-up: 400m (100 free + 100 backstroke + 100 free + 100 kick)
  • Technique: 4×75m drills with 15" = 300m
  • Main set: 5×300m free A3 with 25" = 1,500m
  • Supplementary: 4×100m kick with board A2 with 15" = 400m
  • Supplementary 2: 4×50m pull buoy A1 with 10" = 200m
  • Cool-down: 200m easy mixed

Speed session (2,500m)

  • Warm-up: 600m (200 free + 200 backstroke + 200 progressive)
  • Technique: 4×50m drills with 15" = 200m
  • Main set: 8×100m VO₂ with 30" = 800m
  • Supplementary: 12×25m sprint with 45" = 300m
  • Supplementary 2: 4×100m IM A1 with 20" = 400m
  • Cool-down: 200m easy

With Swimer, every session comes fully structured with all 5 blocks, zone-based paces and automatic progression. Create your free account and train like a professional.


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Step by step

  1. 1

    Warm-up (400-800m)

    Swim 10-15 minutes progressively: start very easy and increase intensity. Include at least 100m kick and 100m of a different stroke. Never start the main set without warming up.

  2. 2

    Technique block (200-400m)

    Do 2-3 specific drills for your level. After warm-up and before the main set, when the body is activated but not fatigued. This is when technique is best learned.

  3. 3

    Main set (800-1,800m)

    The highest intensity and volume block. Defines the session's objective (aerobic, threshold, speed). Use paces based on your CSS and respect prescribed rest intervals.

  4. 4

    Supplementary (200-600m)

    Lower intensity sets working secondary qualities: kick, other strokes, pull or equipment drills. Maintains volume without overloading.

  5. 5

    Cool-down (100-300m)

    Swim at very easy pace (A1 zone) for 5-8 minutes. Facilitates lactate clearance, lowers heart rate and prevents post-workout muscle stiffness.

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