Yung-Deng Lin can stack a group of cups in about 1.6 seconds, an impressive time for a 7-year-old. To give an idea of how fast the child can stack cups, the World Sport Stacking Association overall ...

When my 9-year-old son announced one day last week that he was learning to stack cups at school, I thought he was training to be a busboy. "Good," I said. "Unload the dishwasher." I have since learned ...

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 ...

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.

Clack-clack-clack-clack. Like the hoof beats of a thousand baby Clydesdales. This is cup stacking, the deceptively simple task of building and taking down pyramids of plastic cups. Fast. How fast? All ...