Now that action cameras are becoming more affordable and ever-present, triathletes can use them to show off their favorite training routes, do course recon, and even improve their technique.

Now that action cameras are becoming more affordable and ever-present, triathletes can use them to show off their favorite training routes, do course recon, and even improve their technique. Senior editor Chris Foster traveled to the GoPro Mountain Games in Vail, Colorado, to see what all the fuss is about. Check out tips from Foster and Colorado-based pros like short-course speedster Jon O’Neill and world champion Josiah Middaugh in our three-part series.

Video production by Oliver Baker