Editor’s note: This segment was rebroadcast on Sept. 30, 2025. Click here for that audio. In the early 2000s, thousands of U.S. schools had their students race the clock to stack cups in gym class.

EAGLE – There’s something new on this weekend’s Flight Days schedule. For the first time, competitive cup stacking (called sport or speed stacking) will be a part of Saturday’s activities.In sport ...

If you know what Cup Stacking is, you're probably a parent or a kid who graduated recently. Speed stacks have been around for more than 18 years, but it's blowing up in a big way. Not only has sport ...

Space to play or pause, M to mute, left and right arrows to seek, up and down arrows for volume. You're looking at an Australian Cup Stacking record holder. In April, Theo's heading to Singapore for ...

The "Wisconsin Winter Stack Up" hosted some of the country's fastest cup stackers. Sport stacking is a competition in which competitors stack specially designed cups up and down in set patterns. Speed ...

Flannery Shelfer was trapped, but she was OK with that. Several of her fellow second-grade students at St. Mary's Elementary School surrounded her with a stack of large cups. In just a few seconds, ...

Most sports are actually absurd. Golf involves hitting a tiny ball into a hole hundreds of yards away. Soccer is based on the idea of what if we didn't use our hands. Speed stacking — if you really ...