A male and female runner running together with graphic t-shirts on. A male and female runner running together with graphic T-shirts on

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Never Underestimate An Old Man T-Shirt

Never Underestimate An Old Man T-Shirt

Regular price  Sale price  $29.99

Never Underestimate An Old Man T-Shirt

Regular price  $39.99 Sale price  $29.99
Mildly Athletic Wildly Consistent (Female) T-Shirt

Mildly Athletic Wildly Consistent (Female) T-Shirt

Regular price  Sale price  $29.99

Mildly Athletic Wildly Consistent (Female) T-Shirt

Regular price  $39.99 Sale price  $29.99
PR Enthusiast (Female) T-Shirt

PR Enthusiast (Female) T-Shirt

Regular price  Sale price  $29.99

PR Enthusiast (Female) T-Shirt

Regular price  $39.99 Sale price  $29.99
Pre-Feast Cardio T-Shirt

Pre-Feast Cardio T-Shirt

Regular price  Sale price  $29.99

Pre-Feast Cardio T-Shirt

Regular price  $39.99 Sale price  $29.99
You Died Marathon (Male) T-Shirt

You Died Marathon (Male) T-Shirt

Regular price  Sale price  $29.99

You Died Marathon (Male) T-Shirt

Regular price  $39.99 Sale price  $29.99
Cross Country Mom T-Shirt

Cross Country Mom T-Shirt

Regular price  Sale price  $29.99

Cross Country Mom T-Shirt

Regular price  $39.99 Sale price  $29.99
Show Up T-Shirt

Show Up T-Shirt

Regular price  Sale price  $29.99

Show Up T-Shirt

Regular price  $39.99 Sale price  $29.99
Lowkey Athletic T-Shirt

Lowkey Athletic T-Shirt

Regular price  Sale price  $29.99

Lowkey Athletic T-Shirt

Regular price  $39.99 Sale price  $29.99
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We Run With the Whole Pack

Running doesn't care how fast you are. Neither do we. Mildly Athletic was built for the full spectrum — from the person who just downloaded a training app to the person who's been doing this long enough to know better and does it anyway. Show up in whatever way works for you. We'll make the shirt.

Woman running in a race wearing a 'Run Now Complain Later' t-shirt.

FAQ's

Do your T-shirts fit true to size?

True to size. If you're between sizes, go up — a slightly looser running tee is usually the right call, and you can't un-shrink a shirt. See our size chart for details on how to measure for your size.

Returns/Exchanges

Not the right fit? Wrong size, wrong vibe, or you just changed your mind — it happens. We offer a 30-day money back guarantee for a full refund or replacement. Reach out through our contact page and we'll sort it out. No lengthy process, no guilt trip.

Washing instructions

Wash inside out on cold, tumble dry low or hang dry. This keeps the print looking sharp longer than it has any right to. We'd also suggest not leaving it in a gym bag for three days, but that's between you and your conscience.

When will I get my order?

Orders are processed and shipped as quickly as possible. Once yours is on its way, you'll get a tracking email — which you can use to obsessively refresh the shipping page every 20 minutes, or just ignore until it shows up at your door. We support both approaches.

Delivery typically takes 3–5 business days after your order ships, depending on your location.

What materials are your products made of?

Our tees are made from a cotton/polyester blend that varies slightly by color. They're comfortable, hold up to regular washing, and won't fall apart after your third race.

Where are you located?

We're based in the US. Our shirts are printed in the US. We're not going to make a whole thing out of it, but we did want you to know.

Free Shipping

On all orders over $50

Secure Checkout

100% Encrypted & Private

Sustainable Materials

Eco-friendly, plant-based, and recycled fabrics

Easy 30-Day Returns

Hassle-free returns for peace of mind