How to Improve Your Swimming Times: 7 Strategies That Work

Quick summary: The 7 strategies: 1) Know your CSS, 2) Periodized plan, 3) Prioritize technique, 4) Train speed, 5) Log sessions, 6) Respect recovery, 7) Use equipment strategically. Expected improvement: 2-5 sec/100m per 8-week block.

Improving your swimming times requires more than swimming lots of kilometers. The difference between stagnation and progress lies in training with method, structure and data. Here are the 7 strategies that actually work, ordered by impact.

Expected improvement by level and period

1. Know your CSS and train by zones

The first step to improving is knowing exactly where you stand. The CSS (Critical Swim Speed) test gives you your reference speed, and from there your intensity zones are calculated. Without this data, you're swimming blind. Calculate your CSS for free.

2. Follow a plan with block periodization

Your body needs progressive stimuli and time to adapt. A 4-8 week block plan with gradual volume and intensity increases produces sustained improvements. Changing plans every week is one of the most common mistakes.

3. Prioritize technique

In swimming, technique has more impact than fitness. A small adjustment in head position, body rotation or catch can save you seconds per lap. Dedicate at least 15% of each session to technique drills. Correcting common mistakes gives immediate results.

4. Train speed (yes, this too)

Many swimmers only do endurance. But to lower times you also need speed sets (LAC zone) with long rest. Even 8×50m at maximum effort with 45 seconds rest activate muscle fibers that aerobic swimming doesn't reach.

5. Log and analyze each session

What you don't measure doesn't improve. Recording your main set times, RPE (perceived effort) and sensations helps detect patterns, identify progress and adjust the plan. More on how to measure your progress.

6. Respect recovery

Improvement doesn't happen during training — it happens during recovery. A well-designed plan alternates loading weeks with recovery weeks (70-80% of normal volume). Ignoring recovery produces overtraining and stagnation.

7. Use equipment strategically

Paddles, pull buoy, fins and kickboard aren't just for "resting." Each piece of equipment works specific aspects:

• Paddles: Improve catch and pull strength
• Pull buoy: Isolates upper body, improves position
• Fins: Develop kick and allow higher speed for technique work
• Kickboard: Specific kick training
• Snorkel: Eliminates breathing rotation to work on symmetry

The key: There's no "trick" to improving in swimming. There's a method: CSS + zones + periodization + technique + measurement. Swimmers who apply this system improve predictably and sustainably. Those who don't, stagnate.

Improve with Swimer

Swimer applies all 7 strategies automatically: calculates your CSS, generates your block plan, includes technique in every session, integrates speed sets, logs your results and manages progression. All without needing an in-person coach.

Swimer unifies for the first time everything swimmers needed across five separate apps: AI adaptive training, official time import (RFEN, NCAA, European Aquatics), Strava, Live Pro Swimming (World Aquatics, European Aquatics, Aquatics GB, Swimming Australia, USA, NCAA), social network with 1v1 challenges and rankings, digital medal cabinet, 7D video analysis, Coach Portal and 24/7 human support — in one single app, in English and Spanish. Start free.