There are many exciting aspects to Open Water Swimming, but what are the key factors to keep in mind when swimming in fresh water?
Location and conditions might be the first to come to mind, but there’s more to it than that.
For anyone who swims - or has swum - in fresh water, you’ll know it feels quite different from the sea. If not, here are a few key things to watch out for:
1. Water Density
Fresh water is less dense than salt water. Even with a wetsuit on, you’ll sit lower in the water. This makes swimming more challenging, as more of your body is submerged - creating extra resistance.
Top Tip: Don’t fight it. Overexertion can lead to fatigue later in your swim. Stick to your race pace, keep your stroke controlled, and focus on streamlining. Practice holding your form over longer distances ahead of race day.
2. Water Movement
Unlike rivers or the sea, lakes often have very little movement - especially in summer when rainfall is low. That said, entry and exit points near rivers can create currents that may either assist or challenge you.
Consider the conditions ahead of time and adjust your approach accordingly.
3. Visibility
While some lakes are crystal clear, busy fresh water often becomes murky and dark. Reduced visibility can be unsettling if you’re not used to it.
Goggle Choice Matters: Heavily tinted lenses can worsen the effect, so opt for clear goggles if the lighting conditions allow.
So, how do you overcome these challenges?
Practice.
Find a safe and suitable fresh water location to train in and experience these factors firsthand. That way, nothing will come as a surprise on race day.
As we mentioned in our last article:
Control the controllable - give yourself the best chance to perform at your peak.
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Swim in the historical waters of Lough Derg, but hurry, the deadline is the 9th July 2025.
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