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5 Reasons Swimmers Should Train with Fins

5 Reasons Swimmers Should Train with Fins

Training with fins in the pool is a powerful tool that can take your swimming to the next level, no matter what distance triathlon you are training for. Here are five key reasons why you should incorporate fins into your swim workouts.


1. Strengthens Leg Muscles

Using fins adds resistance to your kick, making your leg muscles work harder. Over time, this strengthens your quads, hamstrings, and calves, which are essential for maintaining an effective kick throughout the swim leg. Stronger legs not only improve your swim but also help you transition more smoothly to the bike, as they’re already primed and ready to go.

Girl swimming with fins

2. Improves Ankle Flexibility

One of the most overlooked aspects of a powerful kick is ankle flexibility. Fins encourage a greater range of motion in your ankles, helping you develop the flexibility needed to achieve an efficient, flutter-like kick. Improved ankle flexibility translates to less drag in the water, allowing you to move through the water more smoothly and with less effort. Note: if you are prone to ankle impingement, I would use fins only for a few hundred yards, not for the whole workout.


3. Improves Swim Technique

Fins help you swim faster, giving you the ability to focus on refining your technique without getting bogged down by fatigue. They definitely make a workout go quicker when you are pressed for time. With the added speed, you can work on your stroke, body rotation, and breathing patterns more effectively. This allows you to ingrain good habits that will pay off during race day when every stroke counts. Note: I would advise you not to use fins for the entire workout, only a few hundred yards. Like any other piece of equipment, it is not allowed in your actual race, so you want to have plenty of time in the water swimming in the real conditions of the race.


4. Improves Body Position

One of the biggest challenges for swimmers is maintaining a good body position in the water. Fins naturally lift your legs higher, helping you achieve a more horizontal and streamlined position. This reduces drag and makes your swimming more efficient, conserving energy for the later stages of the workout.


5. Reduces Shoulder Stress

The added propulsion from fins means your upper body doesn’t have to work as hard, which is great news for your shoulders. This reduction in strain allows you to swim longer without overloading these critical muscles, decreasing the risk of injury. By taking some of the pressure off your shoulders, you can focus on maintaining a strong, consistent stroke throughout your training.


Conclusion

Incorporating fins into your swim training offers numerous benefits, from stronger legs and improved technique to better body position and reduced shoulder stress. Whether you’re looking to fine-tune your form or build endurance, fins can help you reach your goals more effectively. I do advise you, however, to use them for only a portion of your workout as a training tool, and avoid getting too comfortable using equipment which is not permitted in a real race setting.


Have you thought about hiring a coach for your next iron distance race? Click the purple button below and fill out the short form for a FREE 15 min chat with Mary about your race goals!



Mary Timoney

Ironman University Certified Coach

USA Triathlon Certified Coach

ACSM Trainer

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