Training Differences Between 50m and 25m Pools in Taiwan: A Complete Guide to Workout Adjustments

Introduction

For most swimming enthusiasts in Taiwan, daily training takes place in a 25m short-course pool, but official competitions both domestically and internationally (including the National Intercollegiate Athletic Games and Olympic qualifying events) are almost all held in a 50m long-course pool. This difference is not just a matter of “pool length”—it affects pace perception, energy expenditure patterns, technical strategies, and even mental preparation.

This article systematically organizes the training differences between 50m and 25m pools and provides workout adjustment recommendations for Taiwanese swimmers in both environments.

Key Differences Between 25m and 50m Pools

1. Turn Frequency

The number of turns per 100m in a 25m pool is more than double that of a 50m pool. For swimmers with good technique and proficient flip turns, this is actually an advantage (each turn provides approximately 10–15 meters of drag-free gliding), but for those with poorer turn technique, times in a 25m pool will be significantly worse than their 50m pool performance due to the high number of turns.

2. Pace Perception and Rhythm

In a 50m pool, swimmers need to maintain pace over longer straight segments, requiring greater stability in breathing rhythm, stroke rate, and stroke power. Swimmers who overtrain in a 25m pool often find that “straight segments are harder to maintain than expected” when entering a 50m pool, especially in the latter half of longer distances.

3. Energy Expenditure Patterns

In a 25m pool, the turn after each lap provides a brief non-stroking glide, which serves as a form of hidden recovery. In a 50m pool, this recovery opportunity is cut in half, making the same distance feel more tiring subjectively. Research shows that at the same pace, swimming in a 50m pool has an average physiological intensity 3–5% higher than in a 25m pool.

4. Water Conditions

Because of the frequent turns in a 25m short-course pool, the water has more turbulence than a 50m long-course pool. Swimmers in the outer lanes of the “fast lane” often benefit from the water flow generated by others’ strokes. The water in a 50m pool is more stable, placing greater demands on the swimmer’s own feel for the water and ability to maintain speed.

Adjustments for Transitioning from 25m Training to 50m Competition

If you train daily in a 25m pool but your target competition is in a 50m pool, the following adjustments are needed:

Adjustment 1: Time Conversion

25m short-course times are typically faster than 50m long-course times. The conversion relationship is as follows (varies by distance):

This conversion gap mainly comes from the reduced number of turns (losing glide acceleration), requiring more active stroking to maintain speed.

Adjustment 2: Training Pace Correction

If you use a CSS (Critical Swimming Speed) set from a 25m pool test for 50m pool training, you need to slow the CSS pace by approximately 5–8 seconds/100m to match the same physiological intensity.

Example: 25m pool test CSS = 1:35/100m
Equivalent training pace in a 50m pool ≈ 1:40–1:43/100m

Adjustment 3: Specialized Training for Long Straight Segments

In a 25m pool, deliberately skip flip turns (use open turns instead) to extend the rhythm experience of straight swimming; or arrange workouts that involve “swimming two lengths without stopping (25m to 50m and back)” to create uninterrupted 50m segments.

Adjustment 4: Increase Kick Training

Because glide from turns is reduced in a 50m pool, kicking contributes more to maintaining speed. In the 2–3 weeks before transitioning from a 25m to a 50m pool, increase kickboard training volume by 20–30%.

Training Advantages of a 50m Pool

If you have access to a 50m pool for training (such as sports centers or university pools in some Taiwanese cities), the following workouts are particularly effective:

• Rhythm Training: Feeling the balance between stroke rate and stroke power over long straight segments is a training sensation that is difficult to fully experience in a 25m pool
• Pace Consistency Testing: Split timing in a 50m pool better reflects true pace distribution; mid-race slowdown is more apparent in a long-course pool than a short-course pool
• Race Simulation: If your competition is held in a 50m pool, switching to long-course training 4–6 weeks before the event can prevent unfamiliarity with the environment on race day

50m Pool Resources in Taiwan

50m pools are relatively scarce in Taiwan, mainly concentrated in:

• Taipei City: University of Taipei Gymnasium, National Taiwan University Heated Swimming Pool (certain time slots)
• New Taipei City: Some large sports centers (such as Banqiao, Xinzhuang)
• Taoyuan, Taichung, Kaohsiung: Some municipal sports centers in each special municipality have 50m pools
• University Swim Team Facilities: Primarily for training teams, with limited public access hours

Practical Advice: If you cannot regularly use a 50m pool, schedule at least 2–3 long-course training sessions 3–4 weeks before an important competition to familiarize yourself with the environment.

Strategies for Maximizing 25m Pool Training

If you can only train in a 25m pool, the following strategies can partially compensate for the lack of long-course training:

• Refine Flip Turn Technique: Make every turn a speed advantage rather than a speed loss
• Glide Control Drills: Feel the streamlined glide distance after turns and practice “when to start stroking for maximum efficiency”
• 500m+ Continuous Swimming (Over-Distance Training): Even in a 25m pool, long continuous swims can build a rhythm similar to a 50m pool
• No-Flip Turn Training Days: Schedule 1–2 sessions per month using “push off the wall with hands immediately after touching” to experience swimming rhythm without glide acceleration

Practical Recommendations

1. Swimmers training in a 25m pool should complete an all-out test in a 50m pool at least once a month to understand their true level in a long-course pool.
2. Do not rely excessively on turn technique for time compensation: If your 25m pool times are mainly supported by perfect turns, you need to increase pure straight-segment aerobic intensity training.
3. If possible, switch to 50m pool training 6 weeks before competition to allow your body to fully adapt to the long-course rhythm.
4. Record split times for each lap: In a 50m pool, the pace difference between the first and second 25m is the most direct training feedback.
5. Consult swimmers or coaches who use 50m pools: Their experience is the fastest way to adjust your training plan.

Conclusion

The 25m short-course pool is the training home for the vast majority of swimmers in Taiwan, and it is itself an excellent training environment. Understanding the differences between the two pool types is not about disparaging the short-course pool, but about enabling you to train more intelligently in it and adapt quickly when switching to a long-course pool. Regardless of which pool you train in, as long as your workout design is sound and your technique continues to improve, progress will happen.

Related Reading

• 25m Short Course vs 50m Long Course: What’s the Real Difference in Training Strategy?
• Swimming Interval Training Design: Workout Differences Between Short Course and Long Course
• Race Strategy Differences Between Short Course (25m) and Long Course (50m) Pools
• Technical Differences Between 50m Short Course and Long Course Swimming: Turn Ratio and Pacing Strategy