Garmin Forerunner 570

Bottom Line

The Forerunner 570 doesn't mess around—this is a powerhouse for runners and triathletes who actually care about accuracy, with an outstanding 9-10 day battery life that'll keep you tracking through a full training cycle. The comprehensive body battery, sleep insights, and Garmin Coach's automatic training plans create a fitness experience that reviewers genuinely rave about, which is rare. Sure, the UI takes some learning and music streaming isn't an option (manually preload your tracks instead), but these minor limitations are easy to overlook when you're getting this level of performance and value.