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How To Swim Faster With Interval Training

Interval training will help you get the most out of your swim workouts!

Many people go to the pool and swim mindlessly back and forth for 20, 30 or even 60 minutes. Some find this as a meditative escape, and that’s fine, but if you’re serious about stepping up your swimming game and making improvements in stroke technique, efficiency, and endurance you must incorporate some element of interval training into your routine!


What is Interval Training?

It’s not as complicated as you might think. Interval training is simply alternating hard activity with repetitions of either rest or lighter activity. In the gym this is the equivalent of doing 10 repetitions of bench press, then taking thirty seconds rest and then doing another 10 repetitions. If you were to repeat this process a few more times, you’d have a set that looks something like this:

4 x 10 Bench Press @ :30 seconds rest

In swimming, this is no different. Just swap out the repetitions with the distance you’re swimming. For example, if you were to do 50 meters of Freestyle, then take: 30 seconds rest, and then do it again, then your set might look something like this:

4 x 50m Freestyle @ :30 seconds rest


Swimming without interval training is like going to the gym and doing the same exercise continuously without breaks. If you’re running this is fine. In swimming, you’re doing yourself a disservice. Here are some of the benefits of interval training:

Benefits of Interval Training

Whether you’re a novice exerciser or you’ve been exercising for years, interval training can help you jazz up your workout routine. Consider the benefits:

How Does Interval Training Work?

Traditionally, the rest interval follows the following equation:

Interval = Swim Time + Rest Time

For example, it you’re doing a set of 4 x 100s @ 2:00 and it takes you 1:30 to complete a single 100m repetition, then you’d have 30 seconds of rest. That entire set will take 8 Minutes ( 4 x 2 Minutes).

The goal of interval training is to be consistent, which is why using a set time as an interval is more beneficial for aerobic conditioning than doing it based on how much rest you want to get after each swim.

Related: How To Swim 10% Faster with MySwimPro Coach

Workout Example

The following workout example comes from our Workout of the Week: Freestyle Fundamentals. It’s a 1,500 yard session that takes about 35 minutes. Each set is on an interval that corresponds to the focus of the set.

For example, if you look at that workout’s Main Set:

The first part (6 x 50s Freestyle @ 1:00) will take six Minutes (6 x 1 Minute/Repetition). If you swim the 50 in 50 seconds, you’ll have the remaining 10 seconds as rest time. These intervals are calculated based on the energy zones of the set, which you can read more about here.

As you improve your aerobic capacity and swimming technique, you’ll be able to swim at a faster interval. For example, soon you may be able to swim 50s at the :55 second instead of 1:00. The more conditioned you are, the more repetitions you’ll be able to at a specific rest interval without exhausting yourself.


Not only will your fitness improve, but so to will your swimming mechanics, stroke efficiency and enjoyment of the sport!

In the MySwimPro app, all of your intervals are tailored to your speed and goals so every workout is unique to you. Learn how it works:

You can continue doing the same workout routine over and over hoping to swim faster, or you can swim with MySwimPro Coach and follow a structured Training Plan that is 100% specific to you with personalized Workouts, technical instruction and support every step of the way.

And it all costs less than your pool membership! 

If this sounds like the program you’ve been looking for to swim faster, improve your technique, and take your swimming to the next level, download the MySwimPro app and get started! Use code SWIM35 to save $35 on your first year of MySwimPro Coach.


Have any questions? Feel free to shoot me an email at fares@myswimpro.com.

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