If you’ve spent more than a minute in an airport recently, you might’ve noticed everyone wearing these curved running shoes strapped with weird hole-y outsoles under them. Those ubiquitous sneakers ...

The Cloudflow 5 is the newest version of On’s tempo trainer, featuring a redesigned upper, an updated Speedboard, and a new rocker geometry. I didn’t run in the Cloudflow 4, but from what I’ve read, ...