From Runner To Triathlete: Why Swimming Feels So Hard & How To Fix It

Unstoppable With Shangrila Rendon · Jun 19, 2026 · 1h 4m

From Runner To Triathlete: Why Swimming Feels So Hard & How To Fix It

If swimming feels harder than running, it’s not you. It’s how you’re training.

Most runners bring this into the water:

push harder

go longer / do more

fight through it

And that’s exactly why they end up here:

“After 150 or 200 meters I feel like the CO₂ is building up…”

They're out of breath, gasping and have no control.

Even if they can swim 1000 meters or more in the pool… on race day, everything falls apart. And they're left wondering:

“I thought I was ready. Where did all that training go?”

What most athletes don’t…