Runners in a marathon with one runner wearing a MIER white tank top.
Runners in a race with one wearing a red cap and MIER white tank top.

The Next Run Starts Here

The Next Run Starts Here

New Limitless arrivals engineered for speed, breathability, and every mile ahead.

New Limitless arrivals engineered for speed, breathability, and every mile ahead.

Shop the Collection

New Arrivals

Women's TempoCool UPF 50+ Performance Long Sleeve Hoodie
$31.99 USD
$31.99 USD
Men's TempoCool UPF 50+ Performance Long Sleeve Hoodie
$32.99 USD
$32.99 USD
Men's X-Sofort® Ultra-Soft Athletic Tank Top
$26.99 USD
$26.99 USD
Women's PaceLite 2 in 1 Running Athletic Shorts 3"
$33.00 USD
$33.00 USD
Women’s SprintDry™ 4" Running Shorts with Phone Zipper Pocket
$31.99 USD
$31.99 USD
Women’s PaceLite 2-in-1 Running Shorts with Back Zipper Pockets 3"
$35.99 USD
$35.99 USD
Limitless Women's Running Race Singlet
$39.99 USD
$39.99 USD
Limitless Men's Running Race Singlet
$39.99 USD
$39.99 USD
Athlete running

Tops

running shorts

Bottoms

Two people running with running belts

Accessories

Our Best Sellers

Men's SprintDry™ 2 in 1 Running Shorts 5"
$32.99 USD
$32.99 USD
Men's PaceLite Linerless Short 5"
$33.99 USD
$37.99 USD
$33.99 USD
Men's PaceLite Split Shorts W/Brief 3"
$27.99 USD
$27.99 USD
Men's PaceLite Linerless Shorts 7"
From $28.37 USD
From $28.37 USD
Women's SprintDry™ Running Shorts W/Brief 4"
$35.99 USD
$42.99 USD
$35.99 USD
Women's SprintDry™ Running Shorts W/Mesh Liner 3″
$37.99 USD
$37.99 USD
Women's 4" Athletic Nylon Workout Shorts
$37.99 USD
$37.99 USD
Men's SprintDry™ Running Shorts 5"
$27.99 USD
$27.99 USD

Built for Runners. Proven by Science.

Our systematic R&D approach starts with real runner needs and integrates sports science, advanced materials, and real-world testing. From insight to innovation, every product is inspired by athletes, engineered with precision, and tested on the run.
Athletes running on a track with a focus on a woman in a black tank top and red shorts.

Inspired by Athletes

Two women running

Engineered by Science

Athlete preparing to run on a track with a coach in the background.

Tested on the Run

Stories

How to Run Faster for Beginners: A Simple Training Guide

How to Run Faster for Beginners: A Simple Training Guide

Aug 28, 2026
If you have recently started running, you may have already asked yourself the same question: How do I get faster?...
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How to Choose the Right Running Shorts (And Find Your Perfect Inseam)

How to Choose the Right Running Shorts (And Find Your Perfect Inseam)

Mar 31, 2026
Choosing the right running shorts isn’t just about style, it directly impacts comfort, performance, and even your race-day results. Whether...
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What Shorts Do Marathon Runners Actually Wear? (And Why They’re So Short)

What Shorts Do Marathon Runners Actually Wear? (And Why They’re So Short)

Mar 26, 2026
If you watch any major marathon—Boston, Berlin, or your local race—you’ll notice something immediately: runners aren’t dressed for modesty. They’re...
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Running Singlet vs Tank Top: What Should You Actually Wear?

Running Singlet vs Tank Top: What Should You Actually Wear?

Mar 24, 2026
At first glance, running singlets and tank tops look similar, but once you put them on for a run, the...
Learn More →