May 2026 Update: After months of testing, we selected seven new running shirts and tank tops and updated availability and pricing information on four still-outstanding options. The Patagonia Cap Cool ...

To see how these offerings work for warm-weather running, I did more than 600 miles in them over the past few months. My selection filter was that each tested piece needed to be made of at least a ...

If there were a kryptonite for runners, it would undoubtedly be heat. Even the slightest sign of warm conditions impairs running performance. One study analyzed runners competing in seven marathons ...