Swimming Training Periodization: Mileage Planning for the Preparation, Competition, and Recovery Phases

Introduction

Training periodization is one of the most important concepts in modern competitive sports science. It was first systematized by Soviet exercise physiologist Matveyev in the 1960s and remains the standard framework for elite swimmers’ training planning to this day.

However, periodization is not exclusive to Olympic athletes—amateur swimmers in Taiwan can benefit from it just as much. Whether your goal is crossing Sun Moon Lake, a Penghu triathlon, or chasing a personal best, a well-planned periodized training program can help you “peak at the right time.”

The Three Main Phases of Swimming Periodization

Base Phase lays the aerobic foundation
Competition Phase converts the foundation into speed
Recovery/Transition Phase promotes supercompensation and maintains fitness

Detailed Planning for the Three Phases

Base Phase (8–12 weeks)

The core goal of the base phase is to accumulate training volume and build an aerobic foundation.

Recommended base phase mileage for amateur swimmers (3 sessions per week):

• Weeks 1–4: 6,000–7,000m per week
• Weeks 5–8: 8,000–9,000m per week
• Weeks 9–12: 10,000–12,000m per week

Competition Phase (4–8 weeks)

The goal of the competition phase is to increase intensity while reducing training volume, converting the aerobic base into speed and endurance.

• Training volume drops 20–30% (compared to the base phase peak)
• Intensity increases: HIIT increases to 2 sessions per week, with more frequent threshold workouts
• Tapering: In the final 2 weeks, reduce training volume by another 40–50% while maintaining brief high-intensity stimuli

Example competition phase weekly schedule:

• Monday: Threshold training (100m × 10 @ CSS)
• Wednesday: High-intensity HIIT (25m × 12 all-out)
• Friday: Technique and recovery swim (1500m Z1)
• Saturday: Race-pace simulation (repeat race distance × 3)

Recovery Phase (2–4 weeks)

The recovery phase is the most easily overlooked yet most important stage for many swimmers.

• Training volume drops to 50–60% of the base phase
• Intensity is primarily Z1–Z2
• Focus on technique refinement and physical recovery
• Avoid complete cessation (detraining becomes significant after 2 weeks)

Annual Periodization Plan Example (for Sun Moon Lake Crossing)

The Sun Moon Lake mass crossing is typically held in September. Here is an annual plan designed around that goal:

Practical Advice

• Track your weekly training volume: Use Excel or Garmin Connect to monitor and ensure base phase mileage is actually increasing
• Don’t skip recovery weeks: Every 3–4 weeks, schedule a deload week (training volume reduced by 30%)—this is when “supercompensation” occurs
• Taiwan’s summer heat matters: In July–August, pool water temperatures in Taiwan are high, placing greater strain on the body’s cooling system; intensity during the competition phase should be adjusted conservatively
• Multi-cycle design: If you have multiple target races in a year, design several smaller cycles (12–16 weeks each), each with its own preparation–competition–recovery structure

Conclusion

Swimming fitness periodization is not a complicated science. Its core is simple: swim more first, then swim faster, then rest, and repeat. This cycle, combined with scientific mileage planning, allows each training cycle to build progress on top of the previous one. If Taiwanese swimmers are willing to spend 30 minutes planning an annual periodized program, they can get more than triple the benefit from the same training time. The plan doesn’t need to be perfect, but it must exist.

Related Reading

• Periodization of Swimming Fitness: Workout Transitions Across Base, Specific, and Competition Phases
• Periodized Training for Swimmers: Workout Progression from Base to Competition Phase
• Periodized Swimming Fitness: Training Intensity Distribution Across Pre-Season, In-Season, and Post-Season
• Swimming Periodized Training: Workout Transitions Through Volume, Intensity, and Peak Phases