Can the Garmin Forerunner 55 replace a personal coach for half-marathon prep?

The Forerunner 55 is considered an entry-level watch in the Forerunner range; it has GPS tracking, running-specific stats, ...

I’ve tried many heart rate monitors over the years, and only these 3 are worth the money

Don’t get me wrong, wrist-based heart rate tracking on smartwatches has improved loads over the years, but if you do anything ...