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Kids I Had A BIG DAY Running T-Shirt

Regular price $29.00

Shipping calculated at checkout

Please reference size chart at the bottom of the description.

Spend $150 to get free shipping

Behold the "Kids I Had A BIG DAY Running T-Shirt," where every stitch is infused with the spirit of triumphs big runs. This isn't just a t-shirt; it's a banner of honor for the juice-box toting, playground-pacing, parent-chasing little marathoners of the world.

Spun from 100% combed and ring-spun cotton, this tee is as light and soft as the clouds they're convinced they can outrun. The heather hues blend in polyester because kids need flexibility when they spontaneously decide that yes, they CAN climb that tree in record time.

Available in stealthy black for the ninja sprinters, reliable navy for the future admirals of track and field, and dark grey heather for the little ones who've just discovered that dirt tracks and puddles are the best running partners.

This t-shirt celebrates every skinned knee turned victory scar, every sprint to the dinner table as if it's the last lap at the Olympics, and every "I ran the WHOLE way without stopping" story that comes with bonus dramatic gestures.

And let's not forget the "I Had A BIG DAY Running" declaration emblazoned across the front, perfect for those moments when they burst through the door, cheeks flushed with the glow of their latest escapade, eager to recount how they outran their shadow or maybe even the family dog.

So, for every little sprinter, jogger, racer, or just plain runner-in-circles, this t-shirt is for you. Because every day you run is a BIG DAY, especially if it ends with an extra scoop of ice cream as a reward – and trust us, in this shirt, it should.

• 100% combed and ring-spun cotton
• Heather colors are 52% combed and ring-spun cotton, 48% polyester
• Fabric weight: 4.2 oz/yd² (142 g/m2)
• Pre-shrunk fabric
• 32 singles
• Relaxed unisex fit
• Side-seamed construction

This product is made especially for you as soon as you place an order, which is why it takes us a bit longer to deliver it to you. Making products on demand instead of in bulk helps reduce overproduction, so thank you for making thoughtful purchasing decisions!

Size guide

  WIDTH (inches) LENGTH (inches)
S 15 ¼ 20 ⅞
M 16 ¼ 22 ⅛
L 17 ¼ 23 ⅜
XL 18 ¼ 24 ⅜
  WIDTH (cm) LENGTH (cm)
S 38.7 53
M 41.3 56.2
L 43.8 59.4
XL 46.4 62

Return Policy FAQs


We don’t offer returns and exchanges, but if there’s something wrong with your order, please let us know by contacting us using our contact form.


Refunds are only offered to customers that receive the wrong items or damaged items. If any of these apply, please contact us at with photos of wrong/damaged items and we’ll sort that out for you.


At this time, we don't offer exchanges. If you’re unsure which size would fit better, check out our sizing charts—we have one for every item listed on our store, in the product description section. Though rare, it's possible that an item you ordered was mislabeled. If that’s the case, please let us know at within a week after receiving your order. Include your order number and photos of the mislabeled item, and we’ll send you a new one, or issue a refund!

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