triathlon

Garmin Forerunner / Fenix: The Sports Watch That Became a Training Computer

Garmin turned the GPS sports watch into a full training computer. Forerunner handles the road, Fenix handles everything else, and together they define what serious endurance athletes expect from a wrist. This guide explains how the hierarchy works, where the mythology is deserved, what serious runners actually buy, and where COROS, Apple Watch Ultra, and Polar are real alternatives.

May 20, 2026